Anti-infective agents and uses thereof

ABSTRACT

This invention relates to: (a) compounds and salts thereof that, inter alia, inhibit HCV; (b) intermediates useful for the preparation of such compounds and salts; (c) compositions comprising such compounds and salts; (d) methods for preparing such intermediates, compounds, salts, and compositions; (e) methods of use of such compounds, salts, and compositions; and (f) kits comprising such compounds, salts, and compositions.

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS

This patent application is a continuation of U.S. patent application Ser. No. 13/451,889 (filed Apr. 20, 2012) which is a continuation of and claims priority to U.S. patent application Ser. No. 12/212,323 (filed Sep. 17, 2008) which claims priority to U.S. Provisional Patent Application No. 60/972,881 (filed Sep. 17, 2007) and U.S. Provisional Patent Application No. 61/096,792 (filed Sep. 13, 2008). The entire text of those applications is incorporated by reference into this application.

FIELD OF THE INVENTION

This invention is directed to: (a) compounds and salts thereof that, inter alia, are useful as hepatitis C virus (HCV) inhibitors; (b) intermediates useful for the preparation of such compounds and salts; (c) compositions comprising such compounds and salts; (d) methods for preparing such intermediates, compounds, salts, and compositions; (e) methods of use of such compounds, salts, and compositions; and (f) kits comprising such compounds, salts, and compositions.

BACKGROUND OF THE INVENTION

Hepatitis C is a blood-borne, infectious, viral disease that is caused by a hepatotropic virus called HCV. At least six different HCV genotypes (with several subtypes within each genotype) are known to date. In North America, HCV genotype 1a predominates, followed by HCV genotypes 1b, 2a, 2b, and 3a. In the United States, HCV genotypes 1, 2, and 3 are the most common, with about 80% of the hepatitis C patients having HCV genotype 1. In Europe, HCV genotype 1b is predominant, followed by HCV genotypes 2a, 2b, 2c, and 3a. HCV genotypes 4 and 5 are found almost exclusively in Africa. As discussed below, the patient's HCV genotype is clinically important in determining the patient's potential response to therapy and the required duration of such therapy.

An HCV infection can cause liver inflammation (hepatitis) that is often asymptomatic, but ensuing chronic hepatitis can result in cirrhosis of the liver (fibrotic scarring of the liver), liver cancer, and/or liver failure. The World Health Organization estimates that about 170 million persons worldwide are chronically infected with HCV, and from about three to about four million persons are newly infected globally each year. According to the Centers for Disease Control and Prevention, about four million people in the United States are infected with HCV. Co-infection with the human immunodeficiency virus (HIV) is common, and rates of HCV infection among HIV positive populations are higher.

There is a small chance of clearing the virus spontaneously, but the majority of patients with chronic hepatitis C will not clear it without treatment. Indications for treatment typically include proven HCV infection and persistent abnormal liver function tests. There are two treatment regimens that are primarily used to treat hepatitis C: monotherapy (using an interferon agent—either a “conventional” or longer-acting pegylated interferon) and combination therapy (using an interferon agent and ribavirin). Interferon, which is injected into the bloodstream, works by bolstering the immune response to HCV; and ribavirin, which is taken orally, is believed to work by preventing HCV replication. Taken alone, ribavirin does not effectively suppress HCV levels, but an interferon/ribavirin combination is more effective than interferon alone. Typically, hepatitis C is treated with a combination of pegylated interferon alpha and ribavirin for a period of 24 or 48 weeks, depending on the HCV genotype.

The goal of treatment is sustained viral response—meaning that HCV is not measurable in the blood after therapy is completed. Following treatment with a combination of pegylated interferon alpha and ribavirin, sustained cure rates (sustained viral response) of about 75% or better occur in people with HCV genotypes 2 and 3 in 24 weeks of treatment, about 50% in those with HCV genotype 1 with 48 weeks of treatment, and about 65% in those with HCV genotype 4 in 48 weeks of treatment.

Treatment may be physically demanding, particularly for those with prior history of drug or alcohol abuse, because both interferon and ribavirin have numerous side effects. Common interferon-associated side effects include flu-like symptoms, extreme fatigue, nausea, loss of appetite, thyroid problems, high blood sugar, hair loss, and skin reactions at the injection site. Possible serious interferon-associated side effects include psychoses (e.g., suicidal behavior), heart problems (e.g., heart attack, low blood pressure), other internal organ damage, blood problems (e.g., blood counts falling dangerously low), and new or worsening autoimmune disease (e.g., rheumatoid arthritis). Ribavirin-associated side effects include anemia, fatigue, irritability, skin rash, nasal stuffiness, sinusitis, and cough. Ribavirin can also cause birth defects, so pregnancy in female patients and female partners of male patients must be avoided during treatment and for six months afterward.

Some patients do not complete treatment because of the serious side effects discussed above; other patients (non-responders) continue to have measurable HCV levels despite treatment; and yet other patients (relapsers) “clear” the virus during therapy, but the virus returns sometime after completion of the treatment regimen. Thus, there continues to be a need for alternative compounds, compositions, and methods of treatment (used either in combination with or in lieu of an interferon agent and/or ribavirin) to alleviate the symptoms of hepatitis C, thereby providing partial or complete relief. This invention provides compounds (including salts thereof), compositions, and methods of treatment that generally address such a need.

SUMMARY OF THE INVENTION

This invention is directed to compounds that correspond in structure to formula I-L0:

In formula I-L0:

is selected from the group consisting of single carbon-carbon bond and double carbon-carbon bond;

R¹ is selected from the group consisting of hydrogen, methyl, and nitrogen-protecting group;

R² is selected from the group consisting of hydrogen, halo, hydroxy, methyl, cyclopropyl, and cyclobutyl;

R³ is selected from the group consisting of hydrogen, halo, oxo, and methyl;

R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

-   -   (a) the amino, aminocarbonyl, and aminosulfonyl optionally are         substituted with:         -   (1) one or two substituents independently selected from the             group consisting of alkyl, alkenyl, alkynyl, and             alkylsulfonyl, or         -   (2) two substituents that, together with the amino nitrogen,             form a single-ring heterocyclyl, and     -   (b) the alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy,         alkynyloxy, and alkylsulfonyl, optionally are substituted with         one or more substituents independently selected from the group         consisting of halo, oxo, nitro, cyano, azido, hydroxy, amino,         alkyloxy, trimethylsilyl, carbocyclyl, and heterocyclyl,         wherein:         -   the amino optionally is substituted with:             -   (1) one or two substituents independently selected from                 the group consisting of alkyl, alkenyl, alkynyl,                 alkylcarbonyl, alkylsulfonyl, alkyloxycarbonyl,                 carbocyclyl, heterocyclyl, carbocyclylalkyl, and                 heterocyclylalkyl, or             -   (2) two substituents that, together with the amino                 nitrogen, form a single-ring heterocyclyl, and     -   (c) the carbocyclyl and heterocyclyl optionally are substituted         with up to three substituents independently selected from the         group consisting of alkyl, alkenyl, alkynyl, halo, oxo, nitro,         cyano, azido, hydroxy, amino, alkyloxy, trimethylsilyl,         carbocyclyl, and heterocyclyl, wherein:         -   the amino optionally is substituted with:             -   (1) one or two substituents independently selected from                 the group consisting of alkyl, alkenyl, alkynyl,                 alkylcarbonyl, alkylsulfonyl, alkyloxycarbonyl,                 carbocyclyl, heterocyclyl, carbocyclylalkyl, and                 heterocyclylalkyl, or             -   (2) two substituents that, together with the amino                 nitrogen, form a single-ring heterocyclyl;

R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyloxy, carbocyclylsulfonyloxy, haloalkylsulfonyloxy, and halo;

R⁶ is selected from the group consisting of fused 2-ring carbocyclyl and fused 2-ring heterocyclyl, wherein each such substituent optionally is substituted with one or more substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K);

each R^(E) is independently selected from the group consisting of halo, nitro, hydroxy, oxo, carboxy, cyano, amino, imino, azido, and aldehydo, wherein:

-   -   the amino optionally is substituted with one or two substituents         independently selected from the group consisting of alkyl,         alkenyl, and alkynyl;

each R^(F) is independently selected from the group consisting of alkyl, alkenyl, and alkynyl, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, imino, nitro, azido, oxo,         aminosulfonyl, alkylsulfonyl, alkyloxycarbonyl,         alkenyloxycarbonyl, alkynyloxycarbonyl, alkylcarbonyloxy,         alkenylcarbonyloxy, alkynylcarbonyloxy, alkyloxy, alkenyloxy,         alkynyloxy, carbocyclyl, heterocyclyl, cyano, and aminocarbonyl,         wherein:         -   the amino, imino, aminosulfonyl, aminocarbonyl, carbocyclyl,             and heterocyclyl optionally are substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, alkylsulfonyl,             alkenylsulfonyl, alkynylsulfonyl, alkylsulfonylamino,             hydroxy, and alkyloxy, wherein:             -   amino portion of the alkylsulfonylamino optionally is                 substituted with a substituent selected from the group                 consisting of alkyl, alkenyl, and alkynyl;

each R^(G) is independently selected from the group consisting of carbocyclyl and heterocyclyl, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, carboxy, hydroxy, halo, amino, nitro,         azido, oxo, aminosulfonyl, alkyloxycarbonyl, alkenyloxycarbonyl,         alkynyloxycarbonyl, alkylcarbonyloxy, alkenylcarbonyloxy,         alkynylcarbonyloxy, alkyloxy, alkenyloxy, alkynyloxy,         carbocyclyl, heterocyclyl, cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, alkylsulfonyl, alkenylsulfonyl, and             alkynylsulfonyl;

each R^(H) is independently selected from the group consisting of alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyloxy, alkenylsulfonyloxy, and alkynylsulfonyloxy, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, alkylsulfonyl, alkenylsulfonyl, and             alkynylsulfonyl;

each R^(I) is independently selected from the group consisting of alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl, aminocarbonyl, alkyloxycarbonyl, carbocyclylcarbonyl, and heterocyclylcarbonyl, wherein:

-   -   (a) the alkylcarbonyl, alkenylcarbonyl, and alkynylcarbonyl         optionally are substituted with one or more substituents         independently selected from the group consisting of carboxy,         hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, and     -   (b) the aminocarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, alkyloxyalkyl, carbocyclyl,         heterocyclyl, alkylsulfonyl, and alkylsulfonylamino, wherein:         -   the carbocyclyl and heterocyclyl optionally are substituted             with one or two substituents independently selected from the             group consisting of halo, alkyl, and oxo;

each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylcarbonylamino, alkenylcarbonylamino, alkynylcarbonylamino, alkyloxycarbonylamino, alkenyloxycarbonylamino, alkynyloxycarbonylamino, alkylsulfonylamino, alkenylsulfonylamino, alkynylsulfonylamino, aminocarbonylamino, alkyloxycarbonylaminoimino, alkylsulfonylaminoimino, alkenylsulfonylaminoimino, and alkynylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkenyl, alkynyl,         alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or more substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, carboxy, hydroxy, alkyloxy, alkenyloxy, alkynyloxy,             halo, nitro, cyano, azido, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl, alkenyl, and alkynyl portion of such substituents         optionally is substituted with one or more substituents         independently selected from the group consisting of carboxy,         halo, oxo, amino, alkyloxycarbonyl, alkylcarbonyloxy, hydroxy,         alkyloxy, carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy,             and alkynyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy;     -   (c) the carbocyclyl and heterocyclyl portions of such         substituents optionally are substituted with one or more         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, carboxy, hydroxy, alkyloxy, alkenyloxy,         alkynyloxy, halo, nitro, cyano, azido, and amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, and alkynyl; and

each R^(K) is independently selected from the group consisting of aminosulfonyl, alkylsulfonyl, alkenylsulfonyl, and alkynylsulfonyl, wherein:

-   -   (a) the alkylsulfonyl, alkenylsulfonyl, and alkynylsulfonyl         optionally are substituted with one or more substituents         independently selected from the group consisting of carboxy,         hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl; and     -   (b) the aminosulfonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, and alkynyl.

This invention also is directed to the salts (including pharmaceutically acceptable salts) of the compounds of the invention.

This invention also is directed to compositions (including pharmaceutical compositions) that comprise one or more compounds and/or salts of the invention, and, optionally, one or more additional therapeutic agents.

This invention also is directed to kits that comprise one or more compounds and/or salts of the invention, and, optionally, one or more additional therapeutic agents.

This invention also is directed to methods of use of the compounds, salts, compositions, and/or kits of the invention to, for example, inhibit replication of an RNA virus (including HCV), treat a disease treatable by inhibiting HCV ribonucleic acid (RNA) polymerase (including hepatitis C).

This invention also is directed to a use of one or more compounds and/or salts of the invention to prepare a medicament. The medicament optionally can comprise one or more additional therapeutic agents. In some embodiments, the medicament is useful for treating hepatitis C.

Further benefits of Applicants' invention will be apparent to one skilled in the art from reading this patent application.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an illustrative PXRD pattern for the ethanol solvate of compound IB-L0-2.3.

FIG. 2 shows an illustrative TGA profile of the ethanol solvate of compound IB-L0-2.3.

FIG. 3 shows an illustrative PXRD pattern for the acetonitrile solvate of compound IB-L0-2.3.

FIG. 4 shows an illustrative PXRD pattern for the ethyl acetate solvate of compound IB-L0-2.3.

FIG. 5 shows an illustrative PXRD pattern for the 2-propanol solvate of compound IB-L0-2.3.

FIG. 6 shows an illustrative PXRD pattern for the methanol solvate of compound IB-L0-2.3.

FIG. 7 shows an illustrative PXRD pattern for the 1-propanol solvate of compound IB-L0-2.3.

FIG. 8 shows an illustrative PXRD pattern for the solvent free crystalline compound IB-L0-2.3.

FIG. 9 shows an illustrative PXRD pattern for the hydrate of compound IB-L0-2.3.

FIG. 10 shows an illustrative PXRD pattern for the pattern A monosodium salt of compound IB-L0-2.3.

FIG. 11 shows an illustrative TGA profile of the pattern A monosodium salt of compound IB-L0-2.3.

FIG. 12 shows an illustrative PXRD pattern for the pattern B monosodium salt of compound IB-L0-2.3.

FIG. 13 shows an illustrative TGA profile of the pattern B monosodium salt of compound IB-L0-2.3.

FIG. 14 shows an illustrative PXRD pattern for the pattern C monosodium salt of compound IB-L0-2.3.

FIG. 15 shows an illustrative PXRD pattern for the disodium salt of compound IB-L0-2.3.

FIG. 16 shows an illustrative TGA profile of the disodium salt of compound IB-L0-2.3.

FIG. 17 shows an illustrative PXRD pattern for the monopotassium salt of compound IB-L0-2.3.

FIG. 18 shows an illustrative TGA profile of the monopotassium salt of compound IB-L0-2.3.

FIG. 19 shows an illustrative PXRD pattern for the pattern A monocholine salt of compound IB-L0-2.3.

FIG. 20 shows an illustrative TGA profile of the pattern A monocholine salt of compound IB-L0-2.3.

FIG. 21 shows an illustrative PXRD pattern for the pattern B monocholine salt of compound IB-L0-2.3.

FIG. 22 shows an illustrative TGA profile of the pattern B monocholine salt of compound IB-L0-2.3.

FIG. 23 shows an illustrative PXRD pattern for the dicholine salt of compound IB-L0-2.3.

DETAILED DESCRIPTION OF THE INVENTION

This detailed description is intended only to acquaint others skilled in the art with Applicants' invention, its principles, and its practical application so that others skilled in the art may adapt and apply the invention in its numerous forms, as they may be best suited to the requirements of a particular use. This description and its specific examples are intended for purposes of illustration only. This invention, therefore, is not limited to the embodiments described in this patent application, and may be variously modified.

A. Definitions

The term “alkyl” (alone or in combination with another term(s)) means a straight- or branched-chain saturated hydrocarbyl substituent typically containing from 1 to about 20 carbon atoms, more typically from 1 to about 8 carbon atoms, and even more typically from 1 to about 6 carbon atoms. Examples of such substituents include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl, iso-amyl, and hexyl. As in this definition, throughout this detailed description Applicants have provided illustrative examples. The provision of such illustrative examples should not be interpreted as if the provided illustrative examples are the only options available to one skilled in the art.

The term “alkenyl” (alone or in combination with another term(s)) means a straight- or branched-chain hydrocarbyl substituent containing one or more double bonds and typically from 2 to about 20 carbon atoms, more typically from about 2 to about 8 carbon atoms, and even more typically from about 2 to about 6 carbon atoms. Examples of such substituents include ethenyl (vinyl), 2-propenyl, 3-propenyl, 1,4-pentadienyl, 1,4-butadienyl, 1-butenyl, 2-butenyl, and 3-butenyl.

The term “alkynyl” (alone or in combination with another term(s)) means a straight- or branched-chain hydrocarbyl substituent containing one or more triple bonds and typically from 2 to about 20 carbon atoms, more typically from about 2 to about 8 carbon atoms, and even more typically from about 2 to about 6 carbon atoms. Examples of such substituents include ethynyl, 2-propynyl, 3-propynyl, 2-butynyl, and 3-butynyl.

The term “carbocyclyl” (alone or in combination with another term(s)) means a saturated cyclic (i.e., “cycloalkyl”), partially saturated cyclic (i.e., “cycloalkenyl”), or completely unsaturated (i.e., “aryl”) hydrocarbyl substituent containing from 3 to 14 carbon ring atoms (“ring atoms” are the atoms bound together to form the ring or rings of a cyclic substituent). A carbocyclyl may be a single ring, which typically contains from 3 to 6 ring atoms. Examples of such single-ring carbocyclyls include cyclopropyl (cyclopropanyl), cyclobutyl (cyclobutanyl), cyclopentyl (cyclopentanyl), cyclopentenyl, cyclopentadienyl, cyclohexyl (cyclohexanyl), cyclohexenyl, cyclohexadienyl, and phenyl. A carbocyclyl alternatively may be 2 or 3 rings fused together, such as naphthalenyl, tetrahydronaphthalenyl (tetralinyl), indenyl, indanyl (dihydroindenyl), anthracenyl, phenanthrenyl, and decalinyl.

The term “cycloalkyl” (alone or in combination with another term(s)) means a saturated cyclic hydrocarbyl substituent containing from 3 to 14 carbon ring atoms. A cycloalkyl may be a single carbon ring, which typically contains from 3 to 6 carbon ring atoms. Examples of single-ring cycloalkyls include cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl. A cycloalkyl alternatively may be 2 or 3 carbon rings fused together, such as, decalinyl.

The term “aryl” (alone or in combination with another term(s)) means an aromatic carbocyclyl containing from 6 to 14 carbon ring atoms. Examples of aryls include phenyl, naphthalenyl, and indenyl.

In some instances, the number of carbon atoms in a hydrocarbyl substituent (e.g., alkyl, alkenyl, alkynyl, or cycloalkyl) is indicated by the prefix “C_(x)-C_(y)-”, wherein x is the minimum and y is the maximum number of carbon atoms in the substituent. Thus, for example, “C₁-C₆-alkyl” refers to an alkyl substituent containing from 1 to 6 carbon atoms. Illustrating further, C₃-C₆-cycloalkyl means a saturated hydrocarbyl ring containing from 3 to 6 carbon ring atoms.

The term “hydrogen” (alone or in combination with another term(s)) means a hydrogen radical, and may be depicted as —H.

The term “hydroxy” (alone or in combination with another term(s)) means —OH.

The term “nitro” (alone or in combination with another term(s)) means —NO₂.

The term “cyano” (alone or in combination with another term(s)) means —CN, which also may be depicted as —C≡N.

The term “keto” (alone or in combination with another term(s)) means an oxo radical, and may be depicted as ═O.

The term “carboxy” (alone or in combination with another term(s)) means —C(O)—OH.

The term “amino” (alone or in combination with another term(s)) means —NH₂.

The term “imino” (alone or in combination with another term(s)) means ═NH.

The term “aminoimino” (alone or in combination with another term(s)) means ═NNH₂.

The term “halogen” or “halo” (alone or in combination with another term(s)) means a fluorine radical (which may be depicted as —F), chlorine radical (which may be depicted as —Cl), bromine radical (which may be depicted as —Br), or iodine radical (which may be depicted as —I).

A substituent is “substitutable” if it comprises at least one carbon or nitrogen atom that is bonded to one or more hydrogen atoms. Thus, for example, hydrogen, halogen, and cyano do not fall within this definition. In addition, a sulfur atom in a heterocyclyl containing such atom is substitutable with one or two oxo substituents.

If a substituent is described as being “substituted”, a non-hydrogen radical is in the place of hydrogen radical on a carbon or nitrogen of the substituent. Thus, for example, a substituted alkyl substituent is an alkyl substituent in which at least one non-hydrogen radical is in the place of a hydrogen radical on the alkyl substituent. To illustrate, monofluoroalkyl is alkyl substituted with a fluoro radical, and difluoroalkyl is alkyl substituted with two fluoro radicals. It should be recognized that if there are more than one substitution on a substituent, each non-hydrogen radical may be identical or different (unless otherwise stated).

If a substituent is described as being “optionally substituted”, the substituent may be either (1) not substituted or (2) substituted. If a substituent is described as being optionally substituted with up to a particular number of non-hydrogen radicals, that substituent may be either (1) not substituted; or (2) substituted by up to that particular number of non-hydrogen radicals or by up to the maximum number of substitutable positions on the substituent, whichever is less. Thus, for example, if a substituent is described as a heteroaryl optionally substituted with up to 3 non-hydrogen radicals, then any heteroaryl with less than 3 substitutable positions would be optionally substituted by up to only as many non-hydrogen radicals as the heteroaryl has substitutable positions. To illustrate, tetrazolyl (which has only one substitutable position) would be optionally substituted with up to one non-hydrogen radical. To illustrate further, if an amino nitrogen is described as being optionally substituted with up to 2 non-hydrogen radicals, then a primary amino nitrogen will be optionally substituted with up to 2 non-hydrogen radicals, whereas a secondary amino nitrogen will be optionally substituted with up to only 1 non-hydrogen radical.

This patent application uses the terms “substituent” and “radical” interchangeably.

The prefix “halo” indicates that the substituent to which the prefix is attached is substituted with one or more independently selected halogen radicals. For example, haloalkyl means an alkyl substituent in which at least one hydrogen radical is replaced with a halogen radical. Examples of haloalkyls include chloromethyl, 1-bromoethyl, fluoromethyl, difluoromethyl, trifluoromethyl, and 1,1,1-trifluoroethyl. It should be recognized that if a substituent is substituted by more than one halogen radical, those halogen radicals may be identical or different (unless otherwise stated).

The prefix “perhalo” indicates that every hydrogen radical on the substituent to which the prefix is attached is replaced with independently selected halogen radicals, i.e., each hydrogen radical on the substituent is replaced with a halogen radical. If all the halogen radicals are identical, the prefix typically will identify the halogen radical. Thus, for example, the term “perfluoro” means that every hydrogen radical on the substituent to which the prefix is attached is substituted with a fluorine radical. To illustrate, the term “perfluoroalkyl” means an alkyl substituent wherein a fluorine radical is in the place of each hydrogen radical.

The term “carbonyl” (alone or in combination with another term(s)) means —C(O)—.

The term “aminocarbonyl” (alone or in combination with another term(s)) means —C(O)—NH₂.

The term “oxy” (alone or in combination with another term(s)) means an ether substituent, and may be depicted as —O—.

The term “alkoxy” (alone or in combination with another term(s)) means an alkylether substituent, i.e., —O-alkyl. Examples of such a substituent include methoxy (—O—CH₃), ethoxy, n-propoxy, isopropoxy, n-butoxy, iso-butoxy, sec-butoxy, and tert-butoxy.

The term “alkylcarbonyl” (alone or in combination with another term(s)) means —C(O)-alkyl.

The term “aminoalkylcarbonyl” (alone or in combination with another term(s)) means —C(O)— alkyl-NH₂.

The term “alkoxycarbonyl” (alone or in combination with another term(s)) means —C(O)—O-alkyl.

The term “carbocyclylcarbonyl” (alone or in combination with another term(s)) means —C(O)-carbocyclyl.

Similarly, the term “heterocyclylcarbonyl” (alone or in combination with another term(s)) means —C(O)-heterocyclyl.

The term “carbocyclylalkylcarbonyl” (alone or in combination with another term(s)) means —C(O)-alkyl-carbocyclyl.

Similarly, the term “heterocyclylalkylcarbonyl” (alone or in combination with another term(s)) means —C(O)-alkyl-heterocyclyl.

The term “carbocyclyloxycarbonyl” (alone or in combination with another term(s)) means —C(O)-O-carbocyclyl.

The term “carbocyclylalkoxycarbonyl” (alone or in combination with another term(s)) means —C(O)—O-alkyl-carbocyclyl.

The term “thio” or “thia” (alone or in combination with another term(s)) means a thiaether substituent, i.e., an ether substituent wherein a divalent sulfur atom is in the place of the ether oxygen atom. Such a substituent may be depicted as —S—. This, for example, “alkyl-thio-alkyl” means alkyl-S-alkyl (alkyl-sulfanyl-alkyl).

The term “thiol” or “sulfhydryl” (alone or in combination with another term(s)) means a sulfhydryl substituent, and may be depicted as —SH.

The term “(thiocarbonyl)” (alone or in combination with another term(s)) means a carbonyl wherein the oxygen atom has been replaced with a sulfur. Such a substituent may be depicted as —C(S)—.

The term “sulfonyl” (alone or in combination with another term(s)) means —S(O)₂—.

The term “aminosulfonyl” (alone or in combination with another term(s)) means —S(O)₂—NH₂.

The term “sulfinyl” or “sulfoxido” (alone or in combination with another term(s)) means —S(O)—.

The term “heterocyclyl” (alone or in combination with another term(s)) means a saturated (i.e., “heterocycloalkyl”), partially saturated (i.e., “heterocycloalkenyl”), or completely unsaturated (i.e., “heteroaryl”) ring structure containing a total of 3 to 14 ring atoms. At least one of the ring atoms is a heteroatom (i.e., oxygen, nitrogen, or sulfur), with the remaining ring atoms being independently selected from the group consisting of carbon, oxygen, nitrogen, and sulfur.

A heterocyclyl may be a single ring, which typically contains from 3 to 7 ring atoms, more typically from 3 to 6 ring atoms, and even more typically 5 to 6 ring atoms. Examples of single-ring heterocyclyls include furanyl, dihydrofuranyl, tetrahydrofuranyl, thiophenyl (thiofuranyl), dihydrothiophenyl, tetrahydrothiophenyl, pyrrolyl, pyrrolinyl, pyrrolidinyl, imidazolyl, imidazolinyl, imidazolidinyl, pyrazolyl, pyrazolinyl, pyrazolidinyl, triazolyl, tetrazolyl, oxazolyl, oxazolidinyl, isoxazolidinyl, isoxazolyl, thiazolyl, isothiazolyl, thiazolinyl, isothiazolinyl, thiazolidinyl, isothiazolidinyl, thiodiazolyl, oxadiazolyl (including 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl (furazanyl), or 1,3,4-oxadiazolyl), oxatriazolyl (including 1,2,3,4-oxatriazolyl or 1,2,3,5-oxatriazolyl), dioxazolyl (including 1,2,3-dioxazolyl, 1,2,4-dioxazolyl, 1,3,2-dioxazolyl, or 1,3,4-dioxazolyl), oxathiazolyl, oxathiolyl, oxathiolanyl, pyranyl, dihydropyranyl, thiopyranyl, tetrahydrothiopyranyl, pyridinyl (azinyl), piperidinyl, diazinyl (including pyridazinyl (1,2-diazinyl), pyrimidinyl (1,3-diazinyl), or pyrazinyl (1,4-diazinyl)), piperazinyl, triazinyl (including 1,3,5-triazinyl, 1,2,4-triazinyl, and 1,2,3-triazinyl)), oxazinyl (including 1,2-oxazinyl, 1,3-oxazinyl, or 1,4-oxazinyl)), oxathiazinyl (including 1,2,3-oxathiazinyl, 1,2,4-oxathiazinyl, 1,2,5-oxathiazinyl, or 1,2,6-oxathiazinyl)), oxadiazinyl (including 1,2,3-oxadiazinyl, 1,2,4-oxadiazinyl, 1,4,2-oxadiazinyl, or 1,3,5-oxadiazinyl)), morpholinyl, azepinyl, oxepinyl, thiepinyl, and diazepinyl.

A heterocyclyl alternatively may be 2 or 3 rings fused together, such as, for example, indolizinyl, pyranopyrrolyl, 4H-quinolizinyl, purinyl, naphthyridinyl, pyridopyridinyl (including pyrido[3,4-b]-pyridinyl, pyrido[3,2-b]-pyridinyl, or pyrido[4,3-b]-pyridinyl), and pteridinyl. Other examples of fused-ring heterocyclyls include benzo-fused heterocyclyls, such as indolyl, isoindolyl (isobenzazolyl, pseudoisoindolyl), indoleninyl (pseudoindolyl), isoindazolyl (benzpyrazolyl), benzazinyl (including quinolinyl (1-benzazinyl) or isoquinolinyl (2-benzazinyl)), phthalazinyl, quinoxalinyl, quinazolinyl, benzodiazinyl (including cinnolinyl (1,2-benzodiazinyl) or quinazolinyl (1,3-benzodiazinyl)), benzopyranyl (including chromanyl or isochromanyl), benzoxazinyl (including 1,3,2-benzoxazinyl, 1,4,2-benzoxazinyl, 2,3,1-benzoxazinyl, or 3,1,4-benzoxazinyl), and benzisoxazinyl (including 1,2-benzisoxazinyl or 1,4-benzisoxazinyl).

The term “2-fused ring” heterocyclyl (alone or in combination with another term(s)) means a saturated, partially saturated, or aryl heterocyclyl containing 2 fused rings. Examples of 2-fused-ring heterocyclyls include indolizinyl, quinolizinyl, purinyl, naphthyridinyl, pteridinyl, indolyl, isoindolyl, indoleninyl, isoindazolyl, phthalazinyl, quinoxalinyl, quinazolinyl, benzodiazinyl, benzopyranyl, benzothiopyranyl, benzoxazolyl, anthranilyl, benzodioxolyl, benzodioxanyl, benzoxadiazolyl, benzofuranyl, isobenzofuranyl, benzothiazolyl, benzothiadiazolyl, benzimidazolyl, benzotriazolyl, benzoxazinyl, and tetrahydroisoquinolinyl.

The term “heteroaryl” (alone or in combination with another term(s)) means an aromatic heterocyclyl containing from 5 to 14 ring atoms. A heteroaryl may be a single ring or 2 or 3 fused rings. Examples of heteroaryl substituents include 6-membered ring substituents such as pyridyl, pyrazyl, pyrimidinyl, pyridazinyl, and 1,3,5-, 1,2,4- or 1,2,3-triazinyl; 5-membered ring substituents such as imidazyl, furanyl, thiophenyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, 1,2,3-, 1,2,4-, 1,2,5-, or 1,3,4-oxadiazolyl and isothiazolyl; 6/5-membered fused ring substituents such as benzothiofuranyl, benzisoxazolyl, benzoxazolyl, purinyl, and anthranilyl; and 6/6-membered fused rings such as benzopyranyl, quinolinyl, isoquinolinyl, cinnolinyl, quinazolinyl, and benzoxazinyl.

A prefix attached to a multi-component substituent only applies to the first component. To illustrate, the term “alkylcycloalkyl” contains two components: alkyl and cycloalkyl. Thus, the C₁-C₆-prefix on C₁-C₆-alkylcycloalkyl means that the alkyl component of the alkylcycloalkyl contains from 1 to 6 carbon atoms; the C₁-C₆-prefix does not describe the cycloalkyl component. To illustrate further, the prefix “halo” on haloalkoxyalkyl indicates that only the alkoxy component of the alkoxyalkyl substituent is substituted with one or more halogen radicals. If halogen substitution may alternatively or additionally occur on the alkyl component, the substituent would instead be described as “halogen-substituted alkoxyalkyl” rather than “haloalkoxyalkyl.” And finally, if the halogen substitution may only occur on the alkyl component, the substituent would instead be described as “alkoxyhaloalkyl.”

If substituents are described as being “independently selected” from a group, each substituent is selected independent of the other. Each substituent therefore may be identical to or different from the other substituent(s).

When words are used to describe a substituent, the rightmost-described component of the substituent is the component that has the free valence.

When a chemical formula is used to describe a substituent, the dash on the left side of the formula indicates the portion of the substituent that has the free valence.

When a chemical formula is used to describe a linking element between two other elements of a depicted chemical structure, the leftmost dash of the substituent indicates the portion of the substituent that is bound to the left element in the depicted structure. The rightmost dash, on the other hand, indicates the portion of the substituent that is bound to the right element in the depicted structure. To illustrate, if the depicted chemical structure is X-L-Y and L is described as —C(O)—N(H)—, then the chemical would be X—C(O)—N(H)—Y.

With reference to the use of the words “comprise” or “comprises” or “comprising” in this patent application (including the claims), Applicants note that unless the context requires otherwise, those words are used on the basis and clear understanding that they are to be interpreted inclusively, rather than exclusively, and that Applicants intend each of those words to be so interpreted in construing this patent application, including the claims below.

ChemDraw software has been used to generate the compound names in this patent application.

The term “amorphous” as applied to a compound refers to a solid-state in which the compound molecules are present in a disordered arrangement and do not form a distinguishable crystal lattice or unit cell. When subjected to X-ray powder diffraction, an amorphous compound does not produce any characteristic crystalline peaks.

The term “crystalline form” as applied to a compound refers to a solid-state in which the compound molecules are arranged to form a distinguishable crystal lattice (i) comprising distinguishable unit cells, and (ii) yielding diffraction pattern peaks when subjected to X-ray radiation.

The term “purity”, unless otherwise qualified, means the chemical purity of a compound according to conventional HPLC assay.

The term “phase purity” means the solid-state purity of a compound with regard to a particular crystalline or amorphous form of the compound as determined by X-ray powder diffraction analytical methods.

The term “phase pure” refers to purity with respect to other solid-state forms of the compound, and does not necessarily imply a high degree of chemical purity with respect to other compounds.

The term “PXRD” means X-ray powder diffraction.

The term “TGA” means thermogravimetric analysis.

The term “DSC” means differential scanning calorimetry.

B. Compounds

This invention is directed, in part, to compounds that are phenyl-uracil derivatives that correspond in structure to formula I:

In these compounds,

is selected from the group consisting of single carbon-carbon bond and double carbon-carbon bond.

In some embodiments,

is a single carbon-carbon bond. In these embodiments, the compounds of formula I correspond in structure to the following formula (i.e., formula IA):

In other embodiments,

is a double carbon-carbon bond. In these embodiments, the compounds of formula I correspond in structure to the following formula (i.e., formula IB):

B1. Substituent R¹

R¹ is selected from the group consisting of hydrogen, methyl, and nitrogen-protecting group.

In some embodiments, R¹ is hydrogen.

In some embodiments, R¹ is methyl.

In some embodiments, R¹ is selected from the group consisting of hydrogen and methyl.

In some embodiments, R¹ is a nitrogen-protecting group. In these embodiments, the compounds are useful as intermediates for the preparation of compounds of formula I. Nitrogen-protecting groups suitable for preparing compounds of formula I are known to those skilled in the art.

B2. Substituent R²

R² is selected from the group consisting of hydrogen, halo, hydroxy, methyl, cyclopropyl, and cyclobutyl.

In some embodiments, R² is hydrogen.

In some embodiments, R² is halo. In some such embodiments, R² is selected from the group consisting of fluoro and chloro. In other such embodiments, R² is fluoro. In yet other such embodiments, R² is chloro. In yet other such embodiments, R² is bromo. In further such embodiments, R² is iodo.

In some embodiments, R² is hydroxy.

In some embodiments, R² is methyl.

In some embodiments, R² is cyclopropyl.

In some embodiments, R² is cyclobutyl.

In some embodiments, R² is selected from the group consisting of hydrogen, methyl, hydroxy, and halo. In some such embodiments, R² is selected from the group consisting of hydrogen, methyl, hydroxy, fluoro, and chloro. In other such embodiments, R² is selected from the group consisting of hydrogen, methyl, hydroxy, and fluoro. In yet other such embodiments, R² is selected from the group consisting of hydrogen, methyl, hydroxy, and chloro. In yet other such embodiments, R² is selected from the group consisting of hydrogen, methyl, hydroxy, and bromo. In further such embodiments, R² is selected from the group consisting of hydrogen, methyl, hydroxy, and iodo.

In some embodiments, R² is selected from the group consisting of hydrogen, methyl, and halo. In some such embodiments, R² is selected from the group consisting of hydrogen, methyl, fluoro, and chloro. In other such embodiments, R² is selected from the group consisting of hydrogen, methyl, and fluoro. In yet other such embodiments, R² is selected from the group consisting of hydrogen, methyl, and chloro. In yet other such embodiments, R² is selected from the group consisting of hydrogen, methyl, and bromo. In further such embodiments, R² is selected from the group consisting of hydrogen, methyl, and iodo.

In some embodiments, R² is selected from the group consisting of hydrogen and halo. In some such embodiments, R² is selected from the group consisting of hydrogen, fluoro, and chloro. In other such embodiments, R² is selected from the group consisting of hydrogen and fluoro. In yet other such embodiments, R² is selected from the group consisting of hydrogen and chloro. In yet other such embodiments, R² is selected from the group consisting of hydrogen and bromo. In further such embodiments, R² is selected from the group consisting of hydrogen and iodo.

B3. Substituent R³

R³ is selected from the group consisting of hydrogen, halo, oxo, and methyl. In some such embodiments, R³ is selected from the group consisting of hydrogen, fluoro, oxo, and methyl. In other such embodiments, R³ is selected from the group consisting of hydrogen, chloro, oxo, and methyl. In yet other such embodiments, R³ is selected from the group consisting of hydrogen, bromo, oxo, and methyl. In yet other such embodiments, R³ is selected from the group consisting of hydrogen, iodo, oxo, and methyl.

In some embodiments, R³ is selected from the group consisting of hydrogen, halo, and oxo. In some such embodiments, R³ is selected from the group consisting of hydrogen, fluoro, and oxo. In other such embodiments, R³ is selected from the group consisting of hydrogen, chloro, and oxo. In yet other such embodiments, R³ is selected from the group consisting of hydrogen, bromo, and oxo. In yet other such embodiments, R³ is selected from the group consisting of hydrogen, iodo, and oxo.

In some embodiments, R³ is selected from the group consisting of hydrogen and methyl.

In some embodiments, R³ is hydrogen.

In some embodiments, R³ is methyl.

In some embodiments, R³ is oxo.

In some embodiments, R³ is halo. In some such embodiments, R³ is fluoro. In other such embodiments, R³ is chloro. In yet other such embodiments, R³ is bromo. In further such embodiments, R³ is iodo.

B4. Substituent R⁴

R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

-   -   (a) the amino, aminocarbonyl, and aminosulfonyl optionally are         substituted with:         -   (1) one or two substituents independently selected from the             group consisting of alkyl, alkenyl, alkynyl, and             alkylsulfonyl, or         -   (2) two substituents that, together with the amino nitrogen,             form a single-ring heterocyclyl,     -   (b) the alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy,         alkynyloxy, and alkylsulfonyl, optionally are substituted with         one or more substituents independently selected from the group         consisting of halo, oxo, nitro, cyano, azido, hydroxy, amino,         alkyloxy, trimethylsilyl, carbocyclyl, and heterocyclyl,         wherein:         -   the amino optionally is substituted with:             -   (1) one or two substituents independently selected from                 the group consisting of alkyl, alkenyl, alkynyl,                 alkylcarbonyl, alkylsulfonyl, alkyloxycarbonyl,                 carbocyclyl, heterocyclyl, carbocyclylalkyl, and                 heterocyclylalkyl, or             -   (2) two substituents that, together with the amino                 nitrogen, form a single-ring heterocyclyl, and     -   (c) the carbocyclyl and heterocyclyl optionally are substituted         with up to three substituents independently selected from the         group consisting of alkyl, alkenyl, alkynyl, halo, oxo, nitro,         cyano, azido, hydroxy, amino, alkyloxy, trimethylsilyl,         carbocyclyl, and heterocyclyl, wherein:         -   the amino optionally is substituted with:             -   (1) one or two substituents independently selected from                 the group consisting of alkyl, alkenyl, alkynyl,                 alkylcarbonyl, alkylsulfonyl, alkyloxycarbonyl,                 carbocyclyl, heterocyclyl, carbocyclylalkyl, and                 heterocyclylalkyl, or             -   (2) two substituents that, together with the amino                 nitrogen, form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

-   -   the amino, aminocarbonyl, and aminosulfonyl optionally are         substituted with:         -   (1) one or two substituents independently selected from the             group consisting of alkyl, alkenyl, alkynyl, and             alkylsulfonyl, or         -   (2) two substituents that, together with the amino nitrogen,             form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

-   -   the alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy, alkynyloxy,         and alkylsulfonyl, optionally are substituted with one or more         substituents independently selected from the group consisting of         halo, oxo, nitro, cyano, azido, hydroxy, amino, alkyloxy,         trimethylsilyl, carbocyclyl, and heterocyclyl, wherein:         -   the amino optionally is substituted with:             -   (1) one or two substituents independently selected from                 the group consisting of alkyl, alkenyl, alkynyl,                 alkylcarbonyl, alkylsulfonyl, alkyloxycarbonyl,                 carbocyclyl, heterocyclyl, carbocyclylalkyl, and                 heterocyclylalkyl, or             -   (2) two substituents that, together with the amino                 nitrogen, form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

-   -   the carbocyclyl and heterocyclyl optionally are substituted with         up to three substituents independently selected from the group         consisting of alkyl, alkenyl, alkynyl, halo, oxo, nitro, cyano,         azido, hydroxy, amino, alkyloxy, trimethylsilyl, carbocyclyl,         and heterocyclyl, wherein:         -   the amino optionally is substituted with:             -   (1) one or two substituents independently selected from                 the group consisting of alkyl, alkenyl, alkynyl,                 alkylcarbonyl, alkylsulfonyl, alkyloxycarbonyl,                 carbocyclyl, heterocyclyl, carbocyclylalkyl, and                 heterocyclylalkyl, or             -   (2) two substituents that, together with the amino                 nitrogen, form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

(a) the amino, aminocarbonyl, and aminosulfonyl optionally are substituted with:

-   -   (1) one or two substituents independently selected from the         group consisting of alkyl, alkenyl, and alkynyl, or,     -   (2) two substituents that, together with the amino nitrogen,         form a single-ring heterocyclyl; and

(b) the alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyl, carbocyclyl, and heterocyclyl optionally are substituted with up to three substituents independently selected from the group consisting of halo, oxo, nitro, cyano, azido, hydroxy, amino, alkyloxy, carbocyclyl, and heterocyclyl, wherein the amino optionally is substituted with:

-   -   (1) one or two substituents independently selected from the         group consisting of alkyl, alkenyl, alkynyl, alkylcarbonyl,         alkylsulfonyl, alkyloxycarbonyl, carbocyclyl, heterocyclyl,         carbocyclylalkyl, and heterocyclylalkyl, or,     -   (2) two substituents that, together with the amino nitrogen,         form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

the amino, aminocarbonyl, and aminosulfonyl optionally are substituted with:

-   -   (1) one or two substituents independently selected from the         group consisting of alkyl, alkenyl, and alkynyl, or,     -   (2) two substituents that, together with the amino nitrogen,         form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl, wherein:

the alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyl, carbocyclyl, and heterocyclyl optionally are substituted with up to three substituents independently selected from the group consisting of halo, oxo, nitro, cyano, azido, hydroxy, amino, alkyloxy, carbocyclyl, and heterocyclyl, wherein the amino optionally is substituted with:

-   -   (1) one or two substituents independently selected from the         group consisting of alkyl, alkenyl, alkynyl, alkylcarbonyl,         alkylsulfonyl, alkyloxycarbonyl, carbocyclyl, heterocyclyl,         carbocyclylalkyl, and heterocyclylalkyl, or,     -   (2) two substituents that, together with the amino nitrogen,         form a single-ring heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the amino optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, and alkylsulfonyl,     -   (b) the C₁-C₄-alkyl, C₂-C₄-alkenyl, and C₂-C₄-alkynyl optionally         are substituted with one or more substituents independently         selected from the group consisting of halo, oxo, hydroxy,         alkyloxy, and trimethylsilyl, and     -   (c) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with up to three substituents         independently selected from the group consisting of alkyl,         alkenyl, alkynyl, halo, and amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, and alkylsulfonyl.

In some embodiments, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the amino optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, and alkylsulfonyl,     -   (b) the C₁-C₄-alkyl, C₂-C₄-alkenyl, and C₂-C₄-alkynyl optionally         are substituted with one or more substituents independently         selected from the group consisting of halo, oxo, hydroxy,         alkyloxy, and trimethylsilyl, and     -   (c) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with up to three substituents         independently selected from the group consisting of alkyl,         alkenyl, alkynyl, halo, and amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, and alkylsulfonyl.

In some embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the C₁-C₄-alkyl optionally is substituted with up to three         substituents independently selected from the group consisting of         halo, oxo, hydroxy, alkyloxy, and trimethylsilyl, and     -   (b) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl, halo,         and alkylsulfonylamino.

In some embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the C₁-C₄-alkyl optionally is substituted with one or two         substituents independently selected from the group consisting of         halo, oxo, hydroxy, alkyloxy, and trimethylsilyl, and     -   (b) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with a substituent selected from the         group consisting of alkyl, halo, and alkylsulfonylamino.

In some embodiments, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the C₁-C₄-alkyl optionally is substituted with up to three         substituents independently selected from the group consisting of         halo, oxo, hydroxy, alkyloxy, and trimethylsilyl, and     -   (b) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl, halo,         and alkylsulfonylamino.

In some embodiments, R⁴ is selected from the group consisting of halo, tert-butyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl optionally         are substituted with a substituent selected from the group         consisting of alkyl, halo, and alkylsulfonylamino.

In some embodiments, R⁴ is selected from the group consisting of tert-butyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl optionally         are substituted with a substituent selected from the group         consisting of alkyl, halo, and alkylsulfonylamino.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, haloalkyl, carboxyalkyl, hydroxyalkyl, alkyloxyalkyl, trimethylsilylalkynyl, alkylcarbocyclyl, carbocyclyl, alkylheterocyclyl, heterocyclyl, halocarbocyclyl, alkylsulfonylamino, and alkylsulfonyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, alkenyl, alkynyl, nitro, cyano, azido, alkyloxy, alkenyloxy, alkynyloxy, amino, aminocarbonyl, aminosulfonyl, alkylsulfonyl, carbocyclyl, and heterocyclyl.

In some embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl.

In some such embodiment, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiment, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, phenyl, and 5-6-membered heteroaryl.

In some embodiments, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl. In some such embodiment, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiment, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, amino, C₁-C₄-alkylsulfonyl, phenyl, and 5-6-membered heteroaryl.

In some embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl. In some such embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiments, R⁴ is selected from the group consisting of halo, C₁-C₄-alkyl, phenyl, and 5-6-membered heteroaryl.

In some embodiments, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl. In some such embodiments, R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiments, R⁴ is selected from the group consisting of C₁-C₄-alkyl, phenyl, and 5-6-membered heteroaryl.

In some embodiments, R⁴ is selected from the group consisting of halo, tert-butyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl. In some such embodiments, R⁴ is selected from the group consisting of halo, tert-butyl, C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiments, R⁴ is selected from the group consisting of halo, tert-butyl, phenyl, and 5-6-membered heteroaryl.

In some embodiments, R⁴ is selected from the group consisting of tert-butyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl. In some such embodiments, R⁴ is selected from the group consisting of tert-butyl, C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiments, R⁴ is selected from the group consisting of tert-butyl, phenyl, and 5-6-membered heteroaryl.

In some embodiments, R⁴ is selected from the group consisting of C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl. In some such embodiments, R⁴ is selected from the group consisting of C₆-carbocyclyl, and 5-6-membered heterocyclyl. In other such embodiments, R⁴ is selected from the group consisting of phenyl and 5-6-membered heteroaryl.

Suitable carbocyclyls for the above embodiments include, for example, cyclopropyl and phenyl.

Suitable heterocyclyls for the above embodiments include, for example, furanyl, thienyl, and pyridinyl.

In some embodiments, R⁴ is selected from the group consisting of halo, alkyl, and alkyloxy.

In some embodiments, R⁴ is alkyl.

In some embodiments, R⁴ is tert-butyl.

B5. Substituent R⁵

R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyloxy, carbocyclylsulfonyloxy, haloalkylsulfonyloxy, and halo.

In some embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and halo. In some such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and fluoro. In other such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and fluoro. In yet other such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and chloro. In yet other such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and bromo. In further such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and iodo.

In some embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and halo. In some such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and fluoro. In other such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and chloro. In yet other such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and bromo. In further such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and iodo.

In some embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, and alkyloxy. In some such embodiments, R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and ethoxy.

In some embodiments, R⁵ is s hydrogen.

In some embodiments, R⁵ is hydroxy.

In some embodiments, R⁵ is alkyloxy.

In some embodiments, R⁵ is methoxy.

In some embodiments, R⁵ is ethoxy.

B6. Substituent L

L is a bond, and the compounds of formula I correspond in structure to formula I-L0:

In some such embodiments, the compounds correspond in structure to the following formula (i.e., formula IA-L0):

In other such embodiments, the compounds correspond in structure to the following formula (i.e., formula IB-L0):

B7. Substituent R⁶

In some embodiments, R⁶ is selected from the group consisting of fused 2-ring carbocyclyl and fused 2-ring heterocyclyl, wherein each such substituent optionally is substituted with one or more substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K).

In some such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are not substituted.

In other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with a substituent selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In some such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with a substituent selected from the group consisting of R^(E), R^(F), R^(I), R^(J), and R^(K). In other such embodiments, fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with a substituent selected from the group consisting of R^(E), R^(F), and R^(J). In yet other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with a substituent selected from the group consisting of R^(F) and R^(J). In other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with R^(J).

In yet other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with two substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In some such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with two substituents independently selected from the group consisting of R^(E), R^(F), R^(I), R^(J), and R^(K). In other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with two substituents independently selected from the group consisting of R^(E), R^(F), and R^(J). In other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with two substituents independently selected from the group consisting of R^(F) and R^(J).

In further such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with three substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In some such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with three substituents independently selected from the group consisting of R^(E), R^(F), R^(I), R^(J), and R^(K). In other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with three substituents independently selected from the group consisting of R^(E), R^(F), and R^(J). In further such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with three substituents independently selected from the group consisting of R^(F) and R^(J).

In further such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with one, two, or three substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In some such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with one, two, or three substituents independently selected from the group consisting of R^(E), R^(F), R^(I), R^(J), and R^(K). In other such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with one, two, or three substituents independently selected from the group consisting of R^(E), R^(F), and R^(J). In further such embodiments, the fused 2-ring carbocyclyl and fused 2-ring heterocyclyl are substituted with one, two, or three substituents independently selected from the group consisting of R^(F) and R^(J).

In some embodiments, R⁶ is fused 2-ring carbocyclyl optionally substituted with one or more substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In some such embodiments, the fused 2-ring carbocyclyl is not substituted. In other such embodiments, the fused 2-ring carbocyclyl is substituted with a substituent selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In yet other such embodiments, the fused 2-ring carbocyclyl is substituted with two substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In further such embodiments, the fused 2-ring carbocyclyl is substituted with three substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In further such embodiments, the fused 2-ring carbocyclyl is substituted with one, two, or three substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K).

In some embodiments, R⁶ is fused 2-ring heterocyclyl optionally substituted with one or more substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In some such embodiments, the fused 2-ring heterocyclyl is not substituted. In other such embodiments, the fused 2-ring heterocyclyl is substituted with a substituent selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In yet other such embodiments, the fused 2-ring heterocyclyl is substituted with two substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In further such embodiments, the fused 2-ring heterocyclyl is substituted with three substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K). In further such embodiments, the fused 2-ring heterocyclyl is substituted with one, two, or three substituents independently selected from the group consisting of R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K).

In some of the above embodiments, the optionally substituted fused 2-ring carbocyclyl is selected from the group consisting of naphthalenyl, dihydronaphthalenyl, tetrahydronaphthalenyl, hexahydronaphthalenyl, octahydronaphthalenyl, decahydronaphthalenyl, indenyl, dihydroindenyl, hexahydroindenyl, octahydroindenyl, pentalenyl, octahydropentalenyl, and hexahydropentalenyl. In some such embodiments, the optionally substituted fused 2-ring carbocyclyl is selected from the group consisting of naphthalenyl and dihydroindenyl. In some such embodiments, the optionally substituted fused 2-ring carbocyclyl is naphthalenyl. In other such embodiments, the optionally substituted fused 2-ring carbocyclyl is dihydroindenyl. In further such embodiments, the optionally substituted fused 2-ring carbocyclyl is indenyl.

In some of the above embodiments, the optionally substituted fused 2-ring heterocyclyl is selected from the group consisting of

X¹, X², and X³ are independently selected from the group consisting of N and C(H);

X⁴ is selected from the group consisting of N(H), O, and S;

X⁵, X⁶, and X⁷ are independently selected from the group consisting of N and C(H);

X⁸ is selected from the group consisting of N(H), O, and S;

X⁹ is selected from the group consisting of N(H), O, and S;

X¹⁰, X¹¹, X¹², and X¹³ are independently selected from the group consisting of N and C(H);

X¹⁴ is selected from the group consisting of N(H), O, and S;

X¹⁵, X¹⁶, X¹⁷, and X¹⁸ are independently selected from the group consisting of N and C(H);

one or more of X¹⁹, X²⁰, and X²¹ is N, and the remaining one(s) is/are C(H);

one or more of X²², X²³, X²⁴, and X²⁵ is N, and the remaining one(s) is/are C(H);

one or more of X²⁶, X²⁷, and X²⁸ is N, and the remaining one(s) is/are C(H);

one or more of X²⁹, X³⁰, X³¹, and X³² is N, and the remaining one(s) is/are C(H);

one or more of X³³, X³⁴, and X³⁵ is N, and the remaining one(s) is/are C(H);

one or more of X³⁶, X³⁷, X³⁸, and X³⁹ is N, and the remaining one(s) is/are C(H);

X⁴⁰, X⁴¹, and X⁴² are independently selected from the group consisting of N and C(H);

one of X⁴³, X⁴⁴, and X⁴⁵ is selected from the group consisting of N(H), O, and S, and the remaining two are C(H)₂;

one of X⁴⁶ and X⁴⁷ is selected from the group consisting of N(H), O, and S, and the other one is C(H)₂;

X⁴⁸, X⁴⁹, X⁵⁰, and X⁵¹ are independently selected from the group consisting of N and C(H);

X⁵², X⁵³, and X⁵⁴ are independently selected from the group consisting of N and C(H);

X⁵⁵ is selected from the group consisting of N(H), O, and S;

X⁵⁶, X⁵⁷, and X⁵⁸ are independently selected from the group consisting of N and C(H);

X⁵⁹ is selected from the group consisting of N(H), O, and S;

X⁶⁰ is selected from the group consisting of N(H), O, and S;

X⁶¹, X⁶², X⁶³, and X⁶⁴ are independently selected from the group consisting of N and C(H);

X⁶⁵ is selected from the group consisting of N(H), O, and S;

X⁶⁶, X⁶⁷, X⁶⁸, and X⁶⁹ are independently selected from the group consisting of N and C(H);

one or more of X⁷⁰, X⁷¹, and X⁷² is N, and the remaining one(s) is/are C(H);

one or more of X⁷³, X⁷⁴, X⁷⁵, and X⁷⁶ is N, and the remaining one(s) is/are C(H); and

one of X⁷⁷ and X⁷⁸ is N(H), and the remaining one is C(H)₂.

In some of the above embodiments, the optionally substituted fused 2-ring heterocyclyl is selected from the group consisting of

In some of the above embodiments, the optionally substituted fused 2-ring heterocyclyl is selected from the group consisting of:

In some of the above embodiments, X¹, X², and X³ are C(H).

In some of the above embodiments, X⁵, X⁶, and X⁷ are C(H).

In some of the above embodiments, X¹⁰, X¹¹, X¹², and X¹³ are C(H).

In some of the above embodiments, X¹⁵, X¹⁶, X¹⁷, and X¹⁸ are C(H).

In some of the above embodiments, one of X¹⁹, X²⁰, and X²¹ is N.

In some of the above embodiments, one of X²², X²³, X²⁴, and X²⁵ is N.

In some of the above embodiments, one of X²⁶, X²⁷, and X²⁸ is N, and one of X²⁹, X³⁰, X³¹, and X³² is N.

In some of the above embodiments, X⁴⁰, X⁴¹, and X⁴² are C(H).

In some of the above embodiments, X⁴⁸, X⁴⁹, X⁵⁰, and X⁵¹ are C(H).

In some of the above embodiments, X⁵², X⁵³, and X⁵⁴ are C(H).

In some of the above embodiments, X⁵⁶, X⁵⁷, and X⁵⁸ are C(H).

In some of the above embodiments, X⁶¹, X⁶², X⁶³, and X⁶⁴ are C(H).

In some of the above embodiments, X⁶⁶, X⁶⁷, X⁶⁸, and X⁶⁹ are C(H).

In some of the above embodiments, one or more of X⁷⁰, X⁷¹, and X⁷² is N, and the remaining one(s) is/are C(H).

In some of the above embodiments, one or more of X⁷³, X⁷⁴, X⁷⁵, and X⁷⁶ is N, and the remaining one(s) is/are C(H).

B8. Substituent R^(E)

Each R^(E) is independently selected from the group consisting of halo, nitro, hydroxy, oxo, carboxy, cyano, amino, imino, azido, and aldehydo, wherein the amino optionally is substituted with one or two substituents independently selected from the group consisting of alkyl, alkenyl, and alkynyl.

In some embodiment, each R^(E) is independently selected from the group consisting of halo, nitro, hydroxy, oxo, carboxy, amino, imino, and aldehydo, wherein the amino optionally is substituted with one or two independently selected alkyl.

In some embodiment, each R^(E) is independently selected from the group consisting of halo, nitro, hydroxy, oxo, carboxy, amino, imino, aldehydo, and alkylamino.

In some embodiment, each R^(E) is independently selected from the group consisting of chloro, fluoro, nitro, hydroxy, oxo, carboxy, amino, imino, aldehydo, and alkylamino.

In some embodiment, each R^(E) is independently selected from the group consisting of halo, nitro, hydroxy, oxo, carboxy, cyano, amino, imino, and azido. In some such embodiments, each R^(E) is halo. In other such embodiments, each R^(E) is nitro. In yet other such embodiments, each R^(E) is hydroxy. In yet other such embodiments, each R^(E) is oxo. In yet other such embodiments, each R^(E) is carboxy. In yet other such embodiments, each R^(E) is cyano. In yet other such embodiments, each R^(E) is amino. In further such embodiments, each R^(E) is imino. In yet further such embodiments, each R^(E) is and azido.

In some embodiments, each R^(E) is independently selected from the group consisting of halo, nitro, hydroxy, oxo, carboxy, cyano, amino, and imino.

B9. Substituent R^(F)

Each R^(F) is independently selected from the group consisting of alkyl, alkenyl, and alkynyl, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, imino, nitro, azido, oxo,         aminosulfonyl, alkylsulfonyl, alkyloxycarbonyl,         alkenyloxycarbonyl, alkynyloxycarbonyl, alkylcarbonyloxy,         alkenylcarbonyloxy, alkynylcarbonyloxy, alkyloxy, alkenyloxy,         alkynyloxy, carbocyclyl, heterocyclyl, cyano, and aminocarbonyl,         wherein:         -   the amino, imino, aminosulfonyl, aminocarbonyl, carbocyclyl,             and heterocyclyl optionally are substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, alkylsulfonyl,             alkenylsulfonyl, alkynylsulfonyl, alkylsulfonylamino,             hydroxy, and alkyloxy, wherein:             -   amino portion of the alkylsulfonylamino optionally is                 substituted with a substituent selected from the group                 consisting of alkyl, alkenyl, and alkynyl.

In some embodiment, each R^(F) is independently selected from the group consisting of alkyl, alkenyl, and alkynyl, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, imino, nitro, azido, oxo,         aminosulfonyl, alkylsulfonyl, alkyloxycarbonyl,         alkenyloxycarbonyl, alkynyloxycarbonyl, alkylcarbonyloxy,         alkenylcarbonyloxy, alkynylcarbonyloxy, alkyloxy, alkenyloxy,         alkynyloxy, carbocyclyl, heterocyclyl, cyano, and aminocarbonyl,         wherein:         -   the amino, imino, aminosulfonyl, and aminocarbonyl             optionally are substituted with one or two substituents             independently selected from the group consisting of alkyl,             alkenyl, alkynyl, alkylsulfonyl, alkenylsulfonyl,             alkynylsulfonyl, and alkylsulfonylamino, wherein:             -   amino portion of the alkylsulfonylamino optionally is                 substituted with a substituent selected from the group                 consisting of alkyl, alkenyl, and alkynyl.

In some of the above embodiments, each R^(F) is independently selected from the group consisting of the alkyl, alkynyl, and alkynyl, wherein such substituents are not substituted.

In some embodiments, each R^(F) is independently selected from the group consisting of alkyl, alkenyl, and alkynyl, wherein:

-   -   each such substituent optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, imino, nitro, oxo, aminosulfonyl,         alkylsulfonyl, alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy,         carbocyclyl, heterocyclyl, cyano, and aminocarbonyl, wherein:         -   the amino, imino, aminosulfonyl, and aminocarbonyl             optionally are substituted with one or two substituents             independently selected from the group consisting of alkyl,             alkylsulfonyl, and alkylsulfonylamino, wherein:             -   amino portion of the alkylsulfonylamino optionally is                 substituted with alkyl.

In some embodiments, each R^(F) is an independently selected alkyl optionally substituted with a substituent selected from the group consisting of carboxy, hydroxy, halo, amino, imino, nitro, oxo, aminosulfonyl, alkylsulfonyl, alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl, heterocyclyl, cyano, and aminocarbonyl, wherein:

-   -   the amino, imino, aminosulfonyl, and aminocarbonyl optionally         are substituted with one or two substituents independently         selected from the group consisting of alkyl, alkylsulfonyl, and         alkylsulfonylamino, wherein:         -   amino portion of the alkylsulfonylamino optionally is             substituted with alkyl.

In some embodiments, each R^(F) is an independently selected alkyl optionally substituted with a substituent selected from the group consisting of carboxy, halo, amino, imino, and aminosulfonyl, wherein:

-   -   the amino, imino, and aminosulfonyl optionally are substituted         with one or two substituents independently selected from the         group consisting of alkyl, alkylsulfonyl, and         alkylsulfonylamino.

In some embodiments, each R^(F) is an independently selected alkyl optionally substituted with amino, wherein the amino optionally is substituted with alkylsulfonyl.

In some embodiments, each R^(F) is an independently selected alkyl substituted with amino, wherein the amino is substituted with alkylsulfonyl. In some such embodiments, each R^(F) is methylsulfonylaminomethyl.

In some embodiments, each R^(F) is independently selected from the group consisting of alkyl, alkenyl, and alkynyl, wherein:

-   -   each such substituent optionally is substituted with one, two,         or three substituents independently selected from the group         consisting of carboxy, hydroxy, halo, amino, imino, nitro,         azido, oxo, aminosulfonyl, alkylsulfonyl, alkyloxycarbonyl,         alkenyloxycarbonyl, alkynyloxycarbonyl, alkylcarbonyloxy,         alkenylcarbonyloxy, alkynylcarbonyloxy, alkyloxy, alkenyloxy,         alkynyloxy, carbocyclyl, heterocyclyl, cyano, and aminocarbonyl.

In some embodiments, each R^(F) is independently selected alkyl substituted with one or more substituents independently selected from the group consisting of carboxy, hydroxy, halo, amino, imino, nitro, azido, oxo, aminosulfonyl, alkylsulfonyl, alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl, alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy, alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl, cyano, and aminocarbonyl.

B10. Substituent R^(G)

Each R^(G) is independently selected from the group consisting of carbocyclyl and heterocyclyl, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, carboxy, hydroxy, halo, amino, nitro,         azido, oxo, aminosulfonyl, alkyloxycarbonyl, alkenyloxycarbonyl,         alkynyloxycarbonyl, alkylcarbonyloxy, alkenylcarbonyloxy,         alkynylcarbonyloxy, alkyloxy, alkenyloxy, alkynyloxy,         carbocyclyl, heterocyclyl, cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, alkylsulfonyl, alkenylsulfonyl, and             alkynylsulfonyl.

In some of the above embodiments, each R^(G) is independently selected from the group consisting of carbocyclyl and heterocyclyl, wherein such substituents are not substituted.

In some embodiments, each R^(G) is independently selected from the group consisting of carbocyclyl and heterocyclyl, wherein:

-   -   each such substituent optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl,         heterocyclyl, cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl and             alkylsulfonyl.

In some of the above embodiments, the carbocyclyl is C₃-C₆-carbocyclyl.

In some of the above embodiments, the heterocyclyl is 5-6-membered heterocyclyl.

B11. Substituent R^(H)

Each R^(H) is independently selected from the group consisting of alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyloxy, alkenylsulfonyloxy, and alkynylsulfonyloxy, wherein:

-   -   each such substituent optionally is substituted with one or more         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, alkylsulfonyl, alkenylsulfonyl, and             alkynylsulfonyl.

In some of the above embodiments, each R^(H) is independently selected from the group consisting of alkyloxy, alkenyloxy, alkynyloxy, alkylsulfonyloxy, alkenylsulfonyloxy, and alkynylsulfonyloxy, wherein such substituents are not substituted.

In some embodiments, each R^(H) is independently selected from the group consisting of alkyloxy and alkylsulfonyloxy, wherein:

-   -   each such substituent optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl,         heterocyclyl, cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl and             alkylsulfonyl.

In some embodiments, each R^(H) is independently selected from the group consisting of alkyloxy and alkylsulfonyloxy, wherein:

-   -   each such substituent optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, cyano, and         aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl and             alkylsulfonyl.

In some embodiments, each R^(H) is independently selected from the group consisting of alkyloxy and alkylsulfonyloxy, wherein:

-   -   each such substituent optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, cyano, and         aminocarbonyl.

In some embodiments, each R^(H) is independently selected alkyloxy.

In some embodiments, each R^(H) is independently selected alkylsulfonyloxy.

B12. Substituent R^(I)

Each R^(I) is independently selected from the group consisting of alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl, aminocarbonyl, alkyloxycarbonyl, carbocyclylcarbonyl, and heterocyclylcarbonyl, wherein:

-   -   (a) the alkylcarbonyl, alkenylcarbonyl, and alkynylcarbonyl         optionally are substituted with one or more substituents         independently selected from the group consisting of carboxy,         hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, and     -   (b) the aminocarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, alkyloxyalkyl, carbocyclyl,         heterocyclyl, alkylsulfonyl, and alkylsulfonylamino, wherein:         -   the carbocyclyl and heterocyclyl optionally are substituted             with one or two substituents independently selected from the             group consisting of halo, alkyl, and oxo.

In some embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl, aminocarbonyl, alkyloxycarbonyl, carbocyclylcarbonyl, and heterocyclylcarbonyl, wherein such substituents are not substituted.

In some embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl, aminocarbonyl, alkyloxycarbonyl, carbocyclylcarbonyl, and heterocyclylcarbonyl, wherein:

-   -   (a) the alkylcarbonyl optionally is substituted with a         substituent selected from the group consisting of carboxy,         hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, and aminocarbonyl,         and     -   (b) the aminocarbonyl optionally is substituted with a         substituent selected from the group consisting of alkyl,         alkyloxyalkyl, alkylsulfonyl, and alkylsulfonylamino.

In some embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl and aminocarbonyl, wherein:

-   -   the aminocarbonyl optionally is substituted with a substituent         selected from the group consisting of alkyl, alkyloxyalkyl,         alkylsulfonyl, and alkylsulfonylamino.

In some embodiment, each R^(I) is independently selected from the group consisting of alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl, and aminocarbonyl, wherein:

-   -   (a) the alkylcarbonyl, alkenylcarbonyl, and alkynylcarbonyl         optionally are substituted with one or more substituents         independently selected from the group consisting of carboxy,         hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, and     -   (b) the aminocarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, and alkylsulfonylamino.

In some of the above embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl, and aminocarbonyl, wherein such substituents are not substituted.

In some embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl and aminocarbonyl, wherein:

-   -   (a) the alkylcarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl,         heterocyclyl, cyano, and aminocarbonyl, and     -   (b) the aminocarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl and alkylsulfonylamino.

In some embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl and aminocarbonyl, wherein:

-   -   (a) the alkylcarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, cyano, and         aminocarbonyl, and     -   (b) the aminocarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl and alkylsulfonylamino.

In some embodiments, each R^(I) is independently selected from the group consisting of alkylcarbonyl and aminocarbonyl, wherein:

-   -   the alkylcarbonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl,         heterocyclyl, cyano, and aminocarbonyl.

In some embodiments, each R^(I) is independently selected alkylcarbonyl.

In some embodiments, each R^(I) is independently selected aminocarbonyl.

B13. Substituent R^(J)

Each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylcarbonylamino, alkenylcarbonylamino, alkynylcarbonylamino, alkyloxycarbonylamino, alkenyloxycarbonylamino, alkynyloxycarbonylamino, alkylsulfonylamino, alkenylsulfonylamino, alkynylsulfonylamino, aminocarbonylamino, alkyloxycarbonylaminoimino, alkylsulfonylaminoimino, alkenylsulfonylaminoimino, and alkynylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkenyl, alkynyl,         alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or more substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, carboxy, hydroxy, alkyloxy, alkenyloxy, alkynyloxy,             halo, nitro, cyano, azido, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl, alkenyl, and alkynyl portion of such substituents         optionally is substituted with one or more substituents         independently selected from the group consisting of carboxy,         halo, oxo, amino, alkyloxycarbonyl, alkylcarbonyloxy, hydroxy,         alkyloxy, carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy,             and alkynyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy;     -   (c) the carbocyclyl and heterocyclyl portions of such         substituents optionally are substituted with one or more         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, carboxy, hydroxy, alkyloxy, alkenyloxy,         alkynyloxy, halo, nitro, cyano, azido, and amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, and alkynyl.

In some embodiment, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylcarbonylamino, alkenylcarbonylamino, alkynylcarbonylamino, alkyloxycarbonylamino, alkenyloxycarbonylamino, alkynyloxycarbonylamino, alkylsulfonylamino, alkenylsulfonylamino, alkynylsulfonylamino, aminocarbonylamino, alkylsulfonylaminoimino, alkenylsulfonylaminoimino, and alkynylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkenyl, alkynyl,         alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or more substituents independently             selected from the group consisting of alkyl, alkenyl,             alkynyl, carboxy, hydroxy, alkyloxy, alkenyloxy, alkynyloxy,             halo, nitro, cyano, azido, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl, alkenyl, and alkynyl portion of such substituents         optionally is substituted with one or more substituents         independently selected from the group consisting of carboxy,         halo, oxo, amino, alkyloxycarbonyl, alkylcarbonyloxy, hydroxy,         alkyloxy, carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy,             and alkynyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy;     -   (c) the carbocyclyl and heterocyclyl portions of such         substituents optionally are substituted with one or more         substituents independently selected from the group consisting of         alkyl, alkenyl, alkynyl, carboxy, hydroxy, alkyloxy, alkenyloxy,         alkynyloxy, halo, nitro, cyano, azido, and amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl, alkenyl, and alkynyl; and

In some of the above embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylcarbonylamino, alkenylcarbonylamino, alkynylcarbonylamino, alkyloxycarbonylamino, alkenyloxycarbonylamino, alkynyloxycarbonylamino, alkylsulfonylamino, alkenylsulfonylamino, alkynylsulfonylamino, aminocarbonylamino, alkylsulfonylaminoimino, alkenylsulfonylaminoimino, and alkynylsulfonylaminoimino, wherein such substituents are not substituted.

In some embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylcarbonylamino, alkyloxycarbonylamino, alkylsulfonylamino, aminocarbonylamino, and alkylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl portion of such substituents optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy;     -   (c) the carbocyclyl and heterocyclyl portions of such         substituents optionally are substituted with one or two         substituents independently selected from the group consisting of         alkyl, carboxy, hydroxy, alkyloxy, halo, nitro, cyano, and         amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected alkyl.

In some embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylsulfonylamino, and alkylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl portion of such substituents optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy;     -   (c) the carbocyclyl and heterocyclyl portions of such         substituents optionally are substituted with one or two         substituents independently selected from the group consisting of         alkyl, carboxy, hydroxy, alkyloxy, halo, nitro, cyano, and         amino, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected alkyl.

In some embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylsulfonylamino, and alkylsulfonylaminoimino, wherein:

-   -   the amino portion of such substituents optionally is substituted         with a substituent independently selected from the group         consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl.

In some embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylsulfonylamino, and alkylsulfonylaminoimino, wherein:

-   -   the alkyl portion of the alkylsulfonylamino and         alkylsulfonylaminoimino optionally is substituted with one or         two substituents independently selected from the group         consisting of carboxy, halo, oxo, amino, alkyloxycarbonyl,         alkylcarbonyloxy, hydroxy, alkyloxy, carbocyclyl, heterocyclyl,         and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy.

In some embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino, heterocyclylsulfonylamino, alkylsulfonylamino, and alkylsulfonylaminoimino, wherein:

-   -   the carbocyclyl and heterocyclyl portions of such substituents         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl,         carboxy, hydroxy, alkyloxy, halo, nitro, cyano, and amino.

In some embodiments, each R^(J) is independently selected from the group consisting of carbocyclylsulfonylamino and heterocyclylsulfonylamino, wherein:

-   -   the carbocyclyl and heterocyclyl portions of such substituents         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl,         carboxy, hydroxy, alkyloxy, halo, nitro, cyano, and amino.

In some embodiments, each R^(J) is independently selected from the group consisting of alkylsulfonylamino, alkenylsulfonylamino, alkynylsulfonylamino, and alkylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl, alkenyl, and alkynyl portion of such substituents         optionally is substituted with one or two substituents         independently selected from the group consisting of carboxy,         halo, oxo, amino, alkyloxycarbonyl, alkylcarbonyloxy, hydroxy,         alkyloxy, carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy.

In some embodiments, each R^(J) is an independently selected alkylsulfonylamino, wherein:

-   -   (a) the amino portion of the alkylsulfonylamino optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl portion of the alkylsulfonylamino optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy.

In some embodiments, each R^(J) is an independently selected alkylsulfonylamino, wherein:

-   -   the amino portion of the alkylsulfonylamino optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl.

In some embodiments, each R^(J) is an independently selected alkylsulfonylamino, wherein:

-   -   the amino portion of the alkylsulfonylamino optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl.

In some embodiments, each R^(J) is an independently selected alkylsulfonylamino, wherein:

-   -   the alkyl portion of the alkylsulfonylamino optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy.

In some embodiments, each R^(J) is an independently selected alkylsulfonylamino, wherein:

-   -   the alkyl portion of the alkylsulfonylamino optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano.

In some embodiments, each R^(J) is an independently selected alkylsulfonylamino. In some such embodiments, each R^(J) is methylsulfonylamino.

In some embodiments, each R^(J) is an independently selected alkylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of the alkylsulfonylaminoimino optionally         is substituted with a substituent independently selected from         the group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl portion of the alkylsulfonylaminoimino optionally         is substituted with one or two substituents independently         selected from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy.

In some embodiments, each R^(J) is an independently selected alkylsulfonylaminoimino, wherein:

-   -   the amino portion of the alkylsulfonylaminoimino optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl.

In some embodiments, each R^(J) is an independently selected alkylsulfonylaminoimino, wherein:

-   -   the amino portion of the alkylsulfonylaminoimino optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl.

In some embodiments, each R^(J) is an independently selected alkylsulfonylaminoimino, wherein:

-   -   the alkyl portion of the alkylsulfonylaminoimino optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy.

In some embodiments, each R^(J) is an independently selected alkylsulfonylaminoimino, wherein:

-   -   the alkyl portion of the alkylsulfonylaminoimino optionally is         substituted with one or two substituents independently selected         from the group consisting of carboxy, halo, oxo, amino,         alkyloxycarbonyl, alkylcarbonyloxy, hydroxy, alkyloxy,         carbocyclyl, heterocyclyl, and cyano.

In some embodiments, each R^(J) is an independently selected alkylsulfonylaminoimino. In some such embodiments, each R^(J) is methylsulfonylaminoimino.

In some embodiments, each R^(J) is independently selected from the group consisting of alkylcarbonylamino and alkyloxycarbonylamino, wherein:

-   -   the alkyl portion of such substituents optionally is substituted         with one or two substituents independently selected from the         group consisting of carboxy, halo, oxo, amino, alkyloxycarbonyl,         alkylcarbonyloxy, hydroxy, alkyloxy, carbocyclyl, heterocyclyl,         and cyano.

B14. Substituent R^(K)

Each R^(K) is independently selected from the group consisting of aminosulfonyl, alkylsulfonyl, alkenylsulfonyl, and alkynylsulfonyl, wherein:

-   -   (a) the alkylsulfonyl, alkenylsulfonyl, and alkynylsulfonyl         optionally are substituted with one or more substituents         independently selected from the group consisting of carboxy,         hydroxy, halo, amino, nitro, azido, oxo, aminosulfonyl,         alkyloxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl,         alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy,         alkyloxy, alkenyloxy, alkynyloxy, carbocyclyl, heterocyclyl,         cyano, and aminocarbonyl, wherein:         -   the amino, aminosulfonyl, and aminocarbonyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl; and     -   (b) the aminosulfonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         alkyl, alkenyl, and alkynyl.

In some of the above embodiments, each R^(K) is independently selected from the group consisting of aminosulfonyl, alkylsulfonyl, alkenylsulfonyl, and alkynylsulfonyl, wherein such substituents are not substituted.

In some embodiments, each R^(K) is independently selected from the group consisting of aminosulfonyl and alkylsulfonyl, wherein:

-   -   (a) the alkylsulfonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl,         heterocyclyl, cyano, and aminocarbonyl; and     -   (b) the aminosulfonyl optionally is substituted with one or two         substituents independently selected alkyl.

In some embodiments, each R^(K) is independently selected from the group consisting of aminosulfonyl and alkylsulfonyl.

C. Embodiments of Compounds of Formula I

Various embodiments of substituents R¹, R², R³, R⁴, R⁵, L, R^(A), R^(B), R^(C), R^(D), R⁶, R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), and R^(K) have been discussed above. These substituent embodiments can be combined to form various embodiments of compounds of formula I. All embodiments of compounds of formula I formed by combining the substituent embodiments discussed above are within the scope of Applicants' invention, and some illustrative embodiments of the compounds of formula I are provided below.

In some embodiments, the compounds of formula I correspond in structure to formula I-L0:

is selected from the group consisting of single carbon-carbon bond and double carbon-carbon bond;

R¹ is selected from the group consisting of hydrogen and methyl;

R² is selected from the group consisting of hydrogen and halo

R³ is selected from the group consisting of hydrogen and halo;

R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the C₁-C₄-alkyl optionally is substituted with up to three         substituents independently selected from the group consisting of         halo, oxo, hydroxy, alkyloxy, and trimethylsilyl, and     -   (b) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl, halo,         and alkylsulfonylamino;

R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and halo;

R⁶ is selected from the group consisting of fused 2-ring heterocyclyl and fused 2-ring carbocyclyl, wherein each such substituent is substituted with one, two, or three substituents independently selected from the group consisting of R^(E), R^(F), R^(I), R^(J), and R^(K);

each R^(E) is independently selected from the group consisting of chloro, fluoro, nitro, hydroxy, oxo, carboxy, amino, imino, aldehydo, and alkylamino;

each R^(F) is an independently selected alkyl optionally substituted with a substituent selected from the group consisting of carboxy, halo, amino, imino, and aminosulfonyl, wherein:

-   -   the amino, imino, and aminosulfonyl optionally are substituted         with one or two substituents independently selected from the         group consisting of alkyl, alkylsulfonyl, and         alkylsulfonylamino;

each R^(I) is independently selected from the group consisting of alkylcarbonyl and aminocarbonyl, wherein:

-   -   the aminocarbonyl optionally is substituted with a substituent         selected from the group consisting of alkyl, alkyloxyalkyl,         alkylsulfonyl, and alkylsulfonylamino;

each R^(J) is independently selected from the group consisting of alkylsulfonylamino, alkenylsulfonylamino, alkynylsulfonylamino, and alkylsulfonylaminoimino, wherein:

-   -   (a) the amino portion of such substituents optionally is         substituted with a substituent independently selected from the         group consisting of carbocyclylalkyl, heterocyclylalkyl,         alkylcarbonyloxy, aminocarbonylalkyl, alkyl, alkylcarbonyl,         alkyloxycarbonyl, alkyloxyalkyloxycarbonyl,         alkylcarbonyloxyalkyl, and alkylsulfonyl, wherein:         -   (1) the carbocyclyl portion of the carbocyclylalkyl and the             heterocyclyl portion of the heterocyclylalkyl optionally are             substituted with one or two substituents independently             selected from the group consisting of alkyl, carboxy,             hydroxy, alkyloxy, halo, nitro, cyano, oxo, and amino, and         -   (2) the amino portion of the aminocarbonylalkyl optionally             is substituted with one or two substituents independently             selected from the group consisting of alkyl, alkenyl, and             alkynyl,     -   (b) the alkyl, alkenyl, and alkynyl portion of such substituents         optionally is substituted with one or two substituents         independently selected from the group consisting of carboxy,         halo, oxo, amino, alkyloxycarbonyl, alkylcarbonyloxy, hydroxy,         alkyloxy, carbocyclyl, heterocyclyl, and cyano, wherein:         -   the amino optionally is substituted with one or two             substituents independently selected from the group             consisting of alkyl and alkyloxy, wherein:             -   the alkyl optionally is substituted with one or more                 hydroxy; and

each R^(K) is independently selected from the group consisting of aminosulfonyl and alkylsulfonyl, wherein:

-   -   (a) the alkylsulfonyl optionally is substituted with one or two         substituents independently selected from the group consisting of         carboxy, hydroxy, halo, amino, nitro, oxo, aminosulfonyl,         alkyloxycarbonyl, alkylcarbonyloxy, alkyloxy, carbocyclyl,         heterocyclyl, cyano, and aminocarbonyl; and     -   (b) the aminosulfonyl optionally is substituted with one or two         substituents independently selected alkyl.

In some embodiments, the compounds of formula I correspond in structure to formula I-L0:

is selected from the group consisting of single carbon-carbon bond and double carbon-carbon bond;

R¹ is hydrogen;

R² is selected from the group consisting of hydrogen and halo

R³ is hydrogen;

R⁴ is tert-butyl;

R⁵ is selected from the group consisting of hydrogen, hydroxy, methoxy, and halo;

R⁶ is a fused 2-ring carbocyclyl selected from the group consisting of naphthalenyl, dihydronaphthalenyl, tetrahydronaphthalenyl, hexahydronaphthalenyl, octahydronaphthalenyl, decahydronaphthalenyl, indenyl, dihydroindenyl, hexahydroindenyl, octahydroindenyl, pentalenyl, octahydropentalenyl, and hexahydropentalenyl, wherein each such substituent is substituted with a substituent selected from the group consisting of R^(F) and R^(J);

R^(F) is alkylsulfonylaminoalkyl; and

R^(J) is alkylsulfonylamino.

Examples of compounds of formula I (and salts thereof) are shown in Tables 1-9 below. The synthesis examples below provide step-by-step preparation instructions for some of these compounds. The remaining compounds were prepared utilizing the general method-of-preparation discussion, specific synthesis examples below, and/or the discussion throughout this application.

TABLE 1

R⁶ compound ring/ring structure substituent(s) IA-L0-2.1 benzimidazol-2-yl -5-N(H)S(O)₂CH₃ IA-L0-2.2 benzthiazol-2-yl -6-N(H)S(O)₂CH₃ IA-L0-2.3 benzthiazol-2yl — IA-L0-2.4 benzthiazol-2-yl -5-N(H)S(O)₂CH₃ IA-L0-2.5 benzoxazol-2-yl -6-N(H)S(O)₂CH₃ IA-L0-2.6 benzoxazol-2-yl -6-NO₂ IA-L0-2.7 benzoxazol-2-yl -5-O₂ IA-L0-2.8 benzoxazol-2-yl -5-N(H)S(O)₂CH₃ IA-L0-2.9 naphthalen-2-yl -6-N(H)S(O)₂CH₃ IA-L0-2.10 benzimidazol-2-yl -5-N[S(O)₂CH₃]₂

TABLE 2

compound R⁴ R⁵ substituent(s) IB-L0-2.1  —C(CH₃)₃ —OCH₃ —H IB-L0-2.2  —C(CH₃)₃ —OCH₃ —OCH₃ IB-L0-2.3  —C(CH₃)₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.8  —C(CH₃)₃ —H —N(H)S(O)₂CH₃ IB-L0-2.14 —C(CH₃)₃ —Cl —N(H)S(O)₂CH₃ IB-L0-2.23 —C(CH₃)₃ —OC(H)₂CH₃ —N(H)S(O)₂CH₃ IB-L0-2.52 —C(CH₃)₂C(H)₂C(H)₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.53

—OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.54 —C(CH₃)₂C(H)₂OH —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.56 —CF₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.57 —I —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.58

—OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.59 furan-2-yl —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.60 —C(F)₂CF₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.61

—OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.64 furan-3-yl —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.66 —C(CH₃)₂C(H)₂OCH₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.68 —S(O)₂CH₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.69 —Br —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.70 —C(CH₃)₂C(O)OCH₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.71 phenyl —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.72 —C(O)OCH₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.73

—OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.74

—OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.75 —N(H)S(O)₂CH₃ —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.76

—OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.77 —C(CH₃)₂C(O)OH —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.78 —C≡CSi(CH₃)₃ —OCH₃ —N(H)S(O)₂CH₃

TABLE 3

compound R⁵ substituent(s) IB-L0-2.4  —OCH₃ ═NN(H)S(O)₂CH₃ IB-L0-2.7  —H ═NN(H)S(O)₂CH₃ IB-L0-2.9  —OCH₃ (S) —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.10 —OCH₃ (R) —F and —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.12 —OCH₃ —F and —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.15 —OCH₃ (R) —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.17 —OCH₃ —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.20 —OCH₃ (S) —F and —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.22 —OCH₃ (S) —C(CH₃)₂N(H)S(O)₂CH₃ IB-L0-2.24 —OCH₃ ═NN(H)C(O)OCH₃ IB-L0-2.25 —OCH₃ —CH₃ and —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.29 —OCH₃ —C(CH₃)₂N(H)S(O)₂CH₃ IB-L0-2.31 —OCH₃ —N(H)N(H)S(O)₂CH₃ IB-L0-2.34 —OCH₃ —C(O)N(H)S(O)₂CH₃ IB-L0-2.36 —OCH₃ —OH IB-L0-2.37 —OCH₃ (R) —C(CH₃)₂N(H)S(O)₂CH₃ IB-L0-2.44 —OCH₃ —N(H)S(O)₂CH₃ IB-L0-2.50 —OCH₃ ═O

TABLE 4

compound R⁴ R⁵ substituent(s) IB-L0-2.51

—OCH₃ ═NN(H)S(O)₂CH₃ IB-L0-2.55 furan-2-yl —OCH₃ ═NN(H)S(O)₂CH₃

TABLE 5

compound R⁵ substituent(s) IB-L0-2.11 —OCH₃ C(H)₂N(H)S(O)₂CH₃ IB-L0-2.21 —OCH₃ —C(H)₂N(CH₃)S(O)₂CH₃ IB-L0-2.35 —Cl —C(H)₂N(H)S(O)₂CH₃

TABLE 6

compound R⁴ substituent(s) IB-L0-2.13 —C(CH₃)₃ —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.16 —C(CH₃)₃ —C(H)₂N(CH₃)S(O)₂CH₃ IB-L0-2.41 —C(CH₃)₃ —C(CH₃)₂N(H)S(O)₂CH₃ IB-L0-2.62

—C(H)₂N(H)S(O)₂CH₃ IB-L0-2.63

—C(H)₂N(H)S(O)₂CH₃ IB-L0-2.65 furan-2-yl —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.67 furan-3-yl —C(H)₂N(H)S(O)₂CH₃

TABLE 7

compound substituent(s) IB-L0-2.18 —C(H)₂N(H)S(O)₂CH₃ IB-L0-2.42 —CH₃

TABLE 8

compound substituent(s) IB-L0-2.27 —NH₂ IB-L0-2.28 —N(H)S(O)₂CH₃ IB-L0-2.33 —H IB-L0-2.38 —Cl IB-L0-2.39 —NH₂ IB-L0-2.46 —N(H)C(H)₂C(H)₂CH₃ IB-L0-2.47

IB-L0-2.49 —N(H)C(O)CH₃

TABLE 9

IB-L0-2.5

IB-L0-2.6

IB-L0-2.19

IB-L0-2.26

IB-L0-2.30

IB-L0-2.32

IB-L0-2.40

IB-L0-2.43

IB-L0-2.45

IB-L0-2.48

IB-L0-2.79

D. Isomers

This invention also is directed, in part, to all isomers of the compounds of formula I (and their salts) (i.e., structural and stereoisomers). Structural isomers include chain and position isomers. Stereoisomers include E/Z isomers (i.e., isomers with regard to one or more double bonds), enantiomers (i.e., stereo-isomers that have opposite configurations at all stereogenic centers), and diastereoisomers (i.e., stereo-isomers that have the same configuration at one or more stereogenic centers, but differ at other stereogenic centers).

E. Salts

This invention also is directed, in part, to all salts of the compounds of formula I. A salt of a compound may be advantageous due to one or more of the salt's properties, such as, for example, enhanced pharmaceutical stability in differing temperatures and humidities, or a desirable solubility in water or other solvents. Where a salt is intended to be administered to a patient (as opposed to, for example, being in use in an in vitro context), the salt preferably is pharmaceutically acceptable and/or physiologically compatible. The term “pharmaceutically acceptable” is used adjectivally in this patent application to mean that the modified noun is appropriate for use as a pharmaceutical product or as a part of a pharmaceutical product. Pharmaceutically acceptable salts include salts commonly used to form alkali metal salts and to form addition salts of free acids or free bases. In general, these salts typically may be prepared by conventional means by reacting, for example, the appropriate acid or base with a compound of the invention.

Pharmaceutically acceptable acid addition salts of the compounds of formula I can be prepared from an inorganic or organic acid. Examples of often suitable inorganic acids include hydrochloric, hydrobromic, hydroiodic, nitric, carbonic, sulfuric, and phosphoric acid. Suitable organic acids generally include, for example, aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic, carboxylic, and sulfonic classes of organic acids. Specific examples of often suitable organic acids include acetate, trifluoroacetate, formate, propionate, succinate, glycolate, gluconate, digluconate, lactate, malate, tartaric acid, citrate, ascorbate, glucuronate, maleate, fumarate, pyruvate, aspartate, glutamate, benzoate, anthranilic acid, mesylate, stearate, salicylate, p-hydroxybenzoate, phenylacetate, mandelate, embonate (pamoate), ethanesulfonate, benzenesulfonate, pantothenate, 2-hydroxyethanesulfonate, sulfanilate, cyclohexylaminosulfonate, algenic acid, beta-hydroxybutyric acid, galactarate, galacturonate, adipate, alginate, bisulfate, butyrate, camphorate, camphorsulfonate, cyclopentanepropionate, dodecylsulfate, glycoheptanoate, glycerophosphate, heptanoate, hexanoate, nicotinate, oxalate, palmoate, pectinate, 2-naphthalesulfonate, 3-phenylpropionate, picrate, pivalate, thiocyanate, tosylate, and undecanoate.

Pharmaceutically acceptable base addition salts of the compounds of formula I include, for example, metallic salts and organic salts. Preferred metallic salts include alkali metal (group Ia) salts, alkaline earth metal (group IIa) salts, and other physiologically acceptable metal salts. Such salts may be made from aluminum, calcium, lithium, magnesium, potassium, sodium, and zinc. Preferred organic salts can be made from amines, such as tromethamine, diethylamine, N,N′-dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, ethylenediamine, meglumine (N-methylglucamine), and procaine. Basic nitrogen-containing groups can be quaternized with agents such as lower alkyl (C₁-C₆) halides (e.g., methyl, ethyl, propyl, and butyl chlorides, bromides, and iodides), dialkyl sulfates (e.g., dimethyl, diethyl, dibutyl, and diamyl sulfates), long chain halides (e.g., decyl, lauryl, myristyl, and stearyl chlorides, bromides, and iodides), arylalkyl halides (e.g., benzyl and phenethyl bromides), and others.

In some embodiments, the salt is sodium salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

In some embodiments, the salt is monosodium salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

In some embodiments, the salt is disodium salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

In some embodiments, the salt is potassium salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

In some embodiments, the salt is monopotassium salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

In some embodiments, the salt is choline salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

In some embodiments, the salt is monocholine salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide.

F. Purity

Compounds of formula I (and salts thereof) with any level of purity (including pure and substantially pure) are within the scope of Applicants' invention. The term “substantially pure” in reference to a compound/salt/isomer, means that the preparation/composition containing the compound/salt/isomer contains more than about 85% by weight of the compound/salt/isomer, preferably more than about 90% by weight of the compound/salt/isomer, preferably more than about 95% by weight of the compound/salt/isomer, preferably more than about 97% by weight of the compound/salt/isomer, and preferably more than about 99% by weight of the compound/salt/isomer.

G. Crystalline Forms of Some Specific Compounds and Salts of the Invention G1. Crystalline Forms of N-(6-(3-Teri-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.3)

This invention also relates, in part, to crystalline forms of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.3), namely the solvate, hydrate, and solvent-free crystalline forms discussed below.

G1A. IB-L0-2.3 Solvates

This invention also relates, in part, to an ethanol solvate of compound IB-L0-2.3.

In some embodiments, the ethanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.3±0.2, 9.7±0.2, 10.6±0.2, 13.6±0.2, 17.2±0.2, 19.2±0.2, 22.7±0.2, 26.9±0.2, and 29.4±0.2 degrees two theta (2θ). In some such embodiments, the ethanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.3±0.2, 9.7±0.2, 10.6±0.2, 13.6±0.2, 17.2±0.2, 19.2±0.2, 22.7±0.2, 26.9±0.2, and 29.4±0.2 degrees 2θ. In other such embodiments, the ethanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.3±0.2, 9.7±0.2, 10.6±0.2, 13.6±0.2, 17.2±0.2, 19.2±0.2, 22.7±0.2, 26.9±0.2, and 29.4±0.2 degrees 2θ.

In some embodiments, the ethanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.3±0.2, 9.7±0.2, 10.0±0.2, 10.6±0.2, 13.6±0.2, 17.2±0.2, 17.5±0.2, 19.2±0.2, 19.4±0.2, 22.7±0.2, 26.9±0.2, and 29.4±0.2 degrees 2θ. In some such embodiments, the ethanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.3±0.2, 9.7±0.2, 10.0±0.2, 10.6±0.2, 13.6±0.2, 17.2±0.2, 17.5±0.2, 19.2±0.2, 19.4±0.2, 22.7±0.2, 26.9±0.2, and 29.4±0.2 degrees 2θ. In other embodiments, the ethanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.3±0.2, 9.7±0.2, 10.0±0.2, 10.6±0.2, 13.6±0.2, 17.2±0.2, 17.5±0.2, 19.2±0.2, 19.4±0.2, 22.7±0.2, 26.9±0.2, and 29.4±0.2 degrees 2θ.

In some embodiments, the ethanol solvate has an X-ray powder diffraction pattern substantially as shown in FIG. 1. The 2θ values for the peaks in FIG. 1 (and their intensities) are as follows: 8.25 (54), 9.67 (74), 9.92 (63), 10.59 (21), 13.64 (49), 17.25 (40), 17.51 (20), 19.19 (66), 19.43 (100), 22.75 (19), 26.92 (25), and 29.39 (18).

This invention also relates, in part, to an acetonitrile solvate of compound IB-L0-2.3.

In some embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.3±0.2, 8.3±0.2, 9.7±0.2, 10.5±0.2, 13.8±0.2, 17.2±0.2, 19.1±0.2, and 19.5±0.2 degrees 2θ. In some such embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.3±0.2, 8.3±0.2, 9.7±0.2, 10.5±0.2, 13.8±0.2, 17.2±0.2, 19.1±0.2, and 19.5±0.2 degrees 2θ. In other such embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.3±0.2, 8.3±0.2, 9.7±0.2, 10.5±0.2, 13.8±0.2, 17.2±0.2, 19.1±0.2, and 19.5±0.2 degrees 2θ.

In some embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.3±0.2, 8.3±0.2, 9.7±0.2, 10.5±0.2, 13.8±0.2, 17.2±0.2, 17.7±0.2, 19.1±0.2, 19.5±0.2, 22.0±0.2, 22.8±0.2, and 27.2±0.2 degrees 2θ. In some such embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.3±0.2, 8.3±0.2, 9.7±0.2, 10.5±0.2, 13.8±0.2, 17.2±0.2, 17.7±0.2, 19.1±0.2, 19.5±0.2, 22.0±0.2, 22.8±0.2, and 27.2±0.2 degrees 2θ. In other such embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.3±0.2, 8.3±0.2, 9.7±0.2, 10.5±0.2, 13.8±0.2, 17.2±0.2, 17.7±0.2, 19.1±0.2, 19.5±0.2, 22.0±0.2, 22.8±0.2, and 27.2±0.2 degrees 2θ.

In some embodiments, the acetonitrile solvate has an X-ray powder diffraction pattern substantially as shown in FIG. 3. The 2θ values for the peaks in FIG. 3 (and their intensities) are as follows: 5.27 (14), 8.29 (33), 9.72 (100), 10.53 (20), 13.77 (67), 17.25 (38), 17.69 (17), 19.05 (63), 19.47 (58), 22.05 (19), 22.75 (16), and 27.17 (21).

This invention also relates, in part, to an ethyl acetate solvate of compound IB-L0-2.3.

In some embodiments, the ethyl acetate solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 7.9±0.2, 9.3±0.2, 9.7±0.2, 10.6±0.2, 18.7±0.2, 38.5±0.2, and 44.7±0.2 degrees 2θ. In some such embodiments, the ethyl acetate solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 7.9±0.2, 9.3±0.2, 9.7±0.2, 10.6±0.2, 18.7±0.2, 38.5±0.2, and 44.7±0.2 degrees 2θ. In other such embodiments, the ethyl acetate solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 7.9±0.2, 9.3±0.2, 9.7±0.2, 10.6±0.2, 18.7±0.2, 38.5±0.2, and 44.7±0.2 degrees 2θ.

In some embodiments, the ethyl acetate solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 7.9±0.2, 9.3±0.2, 9.7±0.2, 10.6±0.2, 13.7±0.2, 17.4±0.2, 18.7±0.2, 21.7±0.2, 22.0±0.2, 28.2±0.2, 38.5±0.2, and 44.7±0.2 degrees 2θ. In some such embodiments, the ethyl acetate solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 7.9±0.2, 9.3±0.2, 9.7±0.2, 10.6±0.2, 13.7±0.2, 17.4±0.2, 18.7±0.2, 21.7±0.2, 22.0±0.2, 28.2±0.2, 38.5±0.2, and 44.7±0.2 degrees 2θ. In other such embodiments, the ethyl acetate solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 7.9±0.2, 9.3±0.2, 9.7±0.2, 10.6±0.2, 13.7±0.2, 17.4±0.2, 18.7±0.2, 21.7±0.2, 22.0±0.2, 28.2±0.2, 38.5±0.2, and 44.7±0.2 degrees 2θ.

In some embodiments, the ethyl acetate has an X-ray powder diffraction pattern substantially as shown in FIG. 4. The 2θ values for the peaks in FIG. 4 (and their intensities) are as follows: 7.94 (24), 9.33 (26), 9.72 (13), 10.58 (23), 13.71 (19), 17.40 (28), 18.72 (44), 21.69 (8), 22.04 (10), 28.23 (8), 38.45 (100), and 44.66 (95).

This invention also relates, in part, to a 2-propanol solvate of compound IB-L0-2.3.

In some embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 16.3±0.2, 18.1±0.2, 18.6±0.2, 19.4±0.2, 21.6±0.2, and 22.5±0.2 degrees 2θ. In some such embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 16.3±0.2, 18.1±0.2, 18.6±0.2, 19.4±0.2, 21.6±0.2, and 22.5±0.2 degrees 2θ. In other such embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 16.3±0.2, 18.1±0.2, 18.6±0.2, 19.4±0.2, 21.6±0.2, and 22.5±0.2 degrees 2θ.

In some embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 16.3±0.2, 18.1±0.2, 18.6±0.2, 19.4±0.2, 21.6±0.2, 22.5±0.2, 23.8±0.2, 26.0±0.2, and 28.0±0.2 degrees 2θ. In some such embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 16.3±0.2, 18.1±0.2, 18.6±0.2, 19.4±0.2, 21.6±0.2, 22.5±0.2, 23.8±0.2, 26.0±0.2, and 28.0±0.2 degrees 2θ. In other such embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 16.3±0.2, 18.1±0.2, 18.6±0.2, 19.4±0.2, 21.6±0.2, 22.5±0.2, 23.8±0.2, 26.0±0.2, and 28.0±0.2 degrees 2θ.

In some embodiments, the 2-propanol solvate has an X-ray powder diffraction pattern substantially as shown in FIG. 5. The 2θ values for the peaks in FIG. 5 (and their intensities) are as follows: 8.18 (32), 9.26 (100), 10.12 (81), 16.28 (93), 18.11 (30), 18.59 (63), 19.40 (67), 21.57 (60), 22.51 (31), 23.82 (29), 25.94 (24), and 28.05 (29).

This invention also relates, in part, to a methanol solvate of compound IB-L0-2.3.

In some embodiments, the methanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.4±0.2, 9.7±0.2, 10.1±0.2, 13.8±0.2, 17.4±0.2, 19.3±0.2, and 19.6±0.2 degrees 2θ. In some such embodiments, the methanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.4±0.2, 9.7±0.2, 10.1±0.2, 13.8±0.2, 17.4±0.2, 19.3±0.2, and 19.6±0.2 degrees 2θ. In other such embodiments, the methanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.4±0.2, 9.7±0.2, 10.1±0.2, 13.8±0.2, 17.4±0.2, 19.3±0.2, and 19.6±0.2 degrees 2θ.

In some embodiments, the methanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.4±0.2, 9.7±0.2, 10.1±0.2, 13.5±0.2, 13.8±0.2, 17.4±0.2, 19.3±0.2, 19.6±0.2, and 27.1±0.2 degrees 2θ. In some such embodiments, the methanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.4±0.2, 9.7±0.2, 10.1±0.2, 13.5±0.2, 13.8±0.2, 17.4±0.2, 19.3±0.2, 19.6±0.2, and 27.1±0.2 degrees 2θ. In other such embodiments, the methanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.4±0.2, 9.7±0.2, 10.1±0.2, 13.5±0.2, 13.8±0.2, 17.4±0.2, 19.3±0.2, 19.6±0.2, and 27.1±0.2 degrees 2θ.

In some embodiments, the methanol solvate has an X-ray powder diffraction pattern substantially as shown in FIG. 6. The 2θ values for the peaks in FIG. 6 (and their intensities) are as follows: 8.36 (48), 9.74 (65), 10.05 (74), 13.55 (24), 13.79 (69), 17.40 (32), 19.30 (80), 19.58 (100), and 27.08 (24).

This invention also relates, in part, to a 1-propanol solvate of compound IB-L0-2.3.

In some embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 15.7±0.2, 16.2±0.2, 18.4±0.2, 19.3±0.2, 21.6±0.2, and 22.8±0.2 degrees 2θ. In some such embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 15.7±0.2, 16.2±0.2, 18.4±0.2, 19.3±0.2, 21.6±0.2, and 22.8±0.2 degrees 2θ. In other such embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 15.7±0.2, 16.2±0.2, 18.4±0.2, 19.3±0.2, 21.6±0.2, and 22.8±0.2 degrees 2θ.

In some embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 10.5±0.2, 15.7±0.2, 16.2±0.2, 18.4±0.2, 18.6±0.2, 19.3±0.2, 21.0±0.2, 21.6±0.2, and 22.8±0.2 degrees 2θ. In some such embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 10.5±0.2, 15.7±0.2, 16.2±0.2, 18.4±0.2, 18.6±0.2, 19.3±0.2, 21.0±0.2, 21.6±0.2, and 22.8±0.2 degrees 2θ. In other such embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.2±0.2, 9.3±0.2, 10.1±0.2, 10.5±0.2, 15.7±0.2, 16.2±0.2, 18.4±0.2, 18.6±0.2, 19.3±0.2, 21.0±0.2, 21.6±0.2, and 22.8±0.2 degrees 2θ.

In some embodiments, the 1-propanol solvate has an X-ray powder diffraction pattern substantially as shown in FIG. 7. The 2θ values for the peaks in FIG. 7 (and their intensities) are as follows: 8.15 (27), 9.26 (87), 10.08 (84), 10.47 (62), 15.73 (40), 16.24 (100), 18.37 (41), 18.59 (49), 19.33 (50), 20.97 (28), 21.65 (71), and 22.81 (44).

This invention also relates, in part, to a process for preparing the above solvates by suspending compound IB-L0-2.3 in the corresponding solvent.

G1B. Solvent Free IB-L0-2.3

This invention also relates, in part, to a solvent free crystalline form of compound IB-L0-2.3.

In some embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 16.2±0.2, and 18.3±0.2 degrees two theta (2θ). In some such embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 16.2±0.2, and 18.3±0.2 degrees 2θ. In other such embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 16.2±0.2, and 18.3±0.2 degrees 2θ.

In some embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 10.1±0.2, 14.9±0.2, 16.2±0.2, 18.3±0.2, 19.8±0.2, and 26.5±0.2 degrees 2θ. In some such embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 10.1±0.2, 14.9±0.2, 16.2±0.2, 18.3±0.2, 19.8±0.2, and 26.5±0.2 degrees 2θ. In other such embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 10.1±0.2, 14.9±0.2, 16.2±0.2, 18.3±0.2, 19.8±0.2, and 26.5±0.2 degrees 2θ. In yet other such embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern comprising eight or more peaks selected from the group consisting of 6.2±0.2, 7.9±0.2, 9.9±0.2, 10.1±0.2, 14.9±0.2, 16.2±0.2, 18.3±0.2, 19.8±0.2, and 26.5±0.2 degrees 2θ.

In some embodiments, the solvent free compound IB-L0-2.3 has an X-ray powder diffraction pattern substantially as shown in FIG. 8. The 2θ values for the peaks in FIG. 8 (and their intensities) are as follows: 6.20 (36), 7.85 (66), 9.89 (61), 10.12 (75), 14.87 (27), 16.19 (89), 18.32 (100), 19.82 (77), and 26.53 (34).

This invention also relates, in part, to a process for preparing the solvent free crystalline form of compound IB-L0-2.3 by desolvating one of IB-L0-2.3 solvates discussed above. A solvate can be desolvated by heating the solvate solid for about 10 min at ˜125° C.

G1C. IB-L0-2.3 Hydrate

This invention also relates, in part, to a hydrate of compound IB-L0-2.3.

In some embodiments, the hydrate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 6.4±0.2, 12.9±0.2, 17.9±0.2, and 18.9±0.2 degrees 2θ. In some such embodiments, the hydrate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 6.4±0.2, 12.9±0.2, 17.9±0.2, and 18.9±0.2 degrees 2θ.

In some embodiments, the hydrate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 6.4±0.2, 12.9±0.2, 17.5±0.2, 17.9±0.2, 18.9±0.2, and 24.4±0.2 degrees 2θ. In some such embodiments, the hydrate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 6.4±0.2, 12.9±0.2, 17.5±0.2, 17.9±0.2, 18.9±0.2, and 24.4±0.2 degrees 2θ. In other such embodiments, the hydrate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 6.4±0.2, 12.9±0.2, 17.5±0.2, 17.9±0.2, 18.9±0.2, and 24.4±0.2 degrees 2θ.

In some embodiments, the hydrate has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 6.4±0.2, 12.7±0.2, 12.9±0.2, 14.1±0.2, 15.7±0.2, 17.2±0.2, 17.5±0.2, 17.9±0.2, 18.9±0.2, 21.2±0.2, 24.4±0.2, and 25.0±0.2 degrees 2θ. In some such embodiments, the hydrate has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 6.4±0.2, 12.7±0.2, 12.9±0.2, 14.1±0.2, 15.7±0.2, 17.2±0.2, 17.5±0.2, 17.9±0.2, 18.9±0.2, 21.2±0.2, 24.4±0.2, and 25.0±0.2 degrees 2θ. In other such embodiments, the hydrate has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 6.4±0.2, 12.7±0.2, 12.9±0.2, 14.1±0.2, 15.7±0.2, 17.2±0.2, 17.5±0.2, 17.9±0.2, 18.9±0.2, 21.2±0.2, 24.4±0.2, and 25.0±0.2 degrees 2θ.

In some embodiments, the hydrate has an X-ray powder diffraction pattern substantially as shown in FIG. 9. The 2θ values for the peaks in FIG. 9 (and their intensities) are as follows: 6.42 (60), 12.71 (33), 12.89 (58), 14.05 (17), 15.68 (18), 17.22 (44), 17.53 (100), 17.86 (51), 18.87 (77), 21.25 (17), 24.35 (28), and 24.95 (20).

This invention also relates, in part, to a process for preparing the hydrate by suspending the above-described solvent free crystalline compound in water. The hydrate was prepared by suspending 300 mg of the solvent free crystalline compound in 2 ml of water at 45° C. for four days.

G2. Crystalline Forms of N-(6-(3-Tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, Monosodium Salt

This invention also relates, in part, to crystalline forms of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, monosodium salt, namely the pattern A, pattern B, and pattern C crystalline forms discussed below.

This invention relates, in part, to a pattern A crystalline monosodium salt.

In some embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 18.6±0.2, 22.8±0.2, and 23.9±0.2 degrees 2θ. In some such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 18.6±0.2, 22.8±0.2, and 23.9±0.2 degrees 2θ. In other such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 18.6±0.2, 22.8±0.2, and 23.9±0.2 degrees 2θ.

In some embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, and 23.9±0.2 degrees 2θ. In some such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, and 23.9±0.2 degrees 2θ. In other such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, and 23.9±0.2 degrees 2θ.

In some embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 16.0±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, 23.9±0.2, and 28.3±0.2 degrees 2θ. In some such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 16.0±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, 23.9±0.2, and 28.3±0.2 degrees 2θ. In other such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 16.0±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, 23.9±0.2, and 28.3±0.2 degrees 2θ. In other such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising eight or more peaks selected from the group consisting of 4.6±0.2, 10.4±0.2, 12.0±0.2, 15.6±0.2, 16.0±0.2, 18.6±0.2, 22.8±0.2, 23.3±0.2, 23.9±0.2, and 28.3±0.2 degrees 2θ.

In some embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern substantially as shown in FIG. 10. The 2θ values for the peaks in FIG. 10 (and their intensities) are as follows: 4.64 (62), 10.41 (38), 12.04 (38), 15.62 (44), 15.99 (44), 18.63 (49), 22.77 (60), 23.29 (40), 23.93 (100), and 28.31 (56).

This invention also relates, in part, to a process for preparing the pattern A monosodium salt. The pattern A monosodium salt was prepared by adding 1M aqueous NaOH (0.548 ml) to compound IB-L0-2.3 (225.72 mg), seeding the resulting suspension with crystalline N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, disodium salt (prepared as discussed below), and equilibrating the resulting suspension at ambient conditions. The pattern A monosodium salt was formed on the following day through a solution-mediated process. The stoichiometry of the salt was presumed to be 1:1 based on the crystallization procedure. This invention also relates, in part, to a pattern B crystalline monosodium salt.

In some embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In some such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ.

In some embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ. In some such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ. In other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ. In other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising eight or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ.

In some embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ. In some such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising two or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ. In other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising two or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, and 31.8±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, and 31.8±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 19.2±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.4±0.2, 10.8±0.2, 16.3±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ.

In some embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, and 16.3±0.2 degrees 2θ. In some such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 16.3±0.2, and 22.1±0.2 degrees 2θ. In other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 16.3±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 19.2±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In yet other such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 21.6±0.2, 22.1±0.2, and 23.7±0.2 degrees 2θ. In further such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, and 31.8±0.2 degrees 2θ. In yet further such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, and 31.8±0.2 degrees 2θ. In yet further such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ. In yet further such embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern comprising peaks at 5.4±0.2, 10.8±0.2, 14.4±0.2, 16.3±0.2, 17.0±0.2, 18.8±0.2, 19.2±0.2, 19.6±0.2, 21.6±0.2, 22.1±0.2, 23.7±0.2, 28.8±0.2, 29.1±0.2, and 31.8±0.2 degrees 2θ.

In some embodiments, the pattern B monosodium salt has an X-ray powder diffraction pattern substantially as shown in FIG. 12. The 2θ values for the peaks in FIG. 12 (and their intensities) are as follows: 5.36 (100), 10.75 (42), 14.43 (20), 16.34 (60), 17.00 (25), 18.83 (18), 19.24 (18), 19.66 (12), 21.64 (29), 22.12 (41), 23.73 (32), 28.83 (9), 29.10 (9), and 31.78 (10).

This invention also relates, in part, to a process for preparing the pattern B monosodium salt. The pattern B monosodium salt can prepared by suspending the pattern A monosodium salt (for example, ˜30 mg) in various organic solvents (e.g., ˜125 ul acetonitrile, ethanol, 1-propanol, or 2-propanol) at room temperature. The pattern B monosodium salt was also prepared by seeding a solution with pattern B monosodium salt. Compound IB-L0-2.3 (12.5 g) was dissolved in DMSO (37.5 ml) at ˜68° C. 1.04 g NaOH dissolved in 6.3 ml of water, 6.3 ml 2-propanol, and 12.5 ml 35.2:1 v/v 2-propanol/water was added. The solution was seeded with 125 mg of pattern B seeds slurried in 12.5 ml of 35.2:1 v/v 2-propanol/water, and the crystallization slurry was incubated at ˜68° C. for ˜1.5 h. 175 ml 35.2:1 v/v 2-propanol/water at ˜68° C. was added over ˜7 h, and the crystallization slurry was cooled to ˜0° C. over no less than 7 h. The crystals were isolated by filtration and analyzed by PXRD. The crystals were then dried at ˜50° C. under vacuum (approximately 3 inches of mercury). The dried crystals were analyzed by PXRD, which showed no change in comparison to the pre-drying sample. The stoichiometry of the pattern B monosodium salt was confirmed by ion chromatography.

This invention also relates, in part, to a pattern C crystalline monosodium salt.

In some embodiments, the pattern C monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.0±0.2, 12.0±0.2, 17.5±0.2, 18.8±0.2, and 22.7±0.2 degrees 2θ. In some such embodiments, the pattern C monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.0±0.2, 12.0±0.2, 17.5±0.2, 18.8±0.2, and 22.7±0.2 degrees 2θ.

In some embodiments, the pattern C monosodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.0±0.2, 12.0±0.2, 17.5±0.2, 17.8±0.2, 18.8±0.2, and 22.7±0.2 degrees 2θ. In some such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.0±0.2, 12.0±0.2, 17.5±0.2, 17.8±0.2, 18.8±0.2, and 22.7±0.2 degrees 2θ. In other such embodiments, the pattern A monosodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.0±0.2, 12.0±0.2, 17.5±0.2, 17.8±0.2, 18.8±0.2, and 22.7±0.2 degrees 2θ.

In some embodiments, the pattern C monosodium salt has an X-ray powder diffraction pattern substantially as shown in FIG. 14. The 2θ values for the peaks in FIG. 14 (and their intensities) are as follows: 4.97 (100), 12.03 (24), 17.55 (32), 17.80 (77), 18.79 (23), and 22.74 (33).

This invention also relates, in part, to a process for preparing the pattern C monosodium salt. The pattern C monosodium salt was prepared as follows. Pattern B monosodium salt (100 mg) was dissolved in 400 ul DMSO and 2 ml 12:1 v/v 2-propanol/H₂O at 70° C. Pattern B monosodium salt seed crystals were added to the solution, and the solution was then cooled to ambient temperature over 20 min. Filtration yielded crystals of the pattern C monosodium salt.

G3. Crystalline Form of N-(6-(3-Tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, Disodium Salt

This invention also relates, in part, to a crystalline form of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, disodium salt.

In some embodiments, the disodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 4.8±0.2, 9.6±0.2, 10.5±0.2, 13.0±0.2, 14.6±0.2, 15.4±0.2, 16.8±0.2, and 23.0±0.2 degrees 2θ. In some such embodiments, the disodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 4.8±0.2, 9.6±0.2, 10.5±0.2, 13.0±0.2, 14.6±0.2, 15.4±0.2, 16.8±0.2, and 23.0±0.2 degrees 2θ. In other such embodiments, the disodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 4.8±0.2, 9.6±0.2, 10.5±0.2, 13.0±0.2, 14.6±0.2, 15.4±0.2, 16.8±0.2, and 23.0±0.2 degrees 2θ.

In some embodiments, the disodium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 4.8±0.2, 9.6±0.2, 10.5±0.2, 13.0±0.2, 14.6±0.2, 15.4±0.2, 16.8±0.2, 22.7±0.2, 23.0±0.2, and 23.3±0.2 degrees 2θ. In some such embodiments, the disodium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 4.8±0.2, 9.6±0.2, 10.5±0.2, 13.0±0.2, 14.6±0.2, 15.4±0.2, 16.8±0.2, 22.7±0.2, 23.0±0.2, and 23.3±0.2 degrees 2θ. In other such embodiments, the disodium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 4.8±0.2, 9.6±0.2, 10.5±0.2, 13.0±0.2, 14.6±0.2, 15.4±0.2, 16.8±0.2, 22.7±0.2, 23.0±0.2, and 23.3±0.2 degrees 2θ.

In some embodiments, the disodium salt has an X-ray powder diffraction pattern substantially as shown in FIG. 15. The 2θ values for the peaks in FIG. 15 (and their intensities) are as follows: 4.80 (100), 9.59 (10), 10.51 (13), 12.98 (11), 14.56 (8), 15.38 (12), 16.84 (6), 22.68 (10), 23.04 (6), and 23.33 (4).

This invention also relates, in part, to a process for preparing the disodium salt. The disodium salt was prepared by suspending compound IB-L0-2.3 (52.83 mg) in 1M aqueous NaOH (1.1 ml) (the molar ratio compound:NaOH was 1:10). The solution was heated to 36° C., and the solid dissolved completely to yield a clear solution. The solution was naturally cooled to ambient temperature, and the salt crystallized in 24 h. Alternatively, the disodium salt was prepared by suspending compound IB-L0-2.3 (51 mg) in EtOH (1 ml). NaOH in 1.2 ml of 5:1 v/v EtOH/H₂O (2.1 molar equivalent) was added. The reaction mixture was concentrated and 2 ml acetonitrile was added to induce crystallization. The stoichiometry of this solid was determined by ion chromatography.

G4. Crystalline Form of N-(6-(3-Tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, Monopotassium Salt

This invention also relates, in part, to a crystalline form of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, monopotassium salt.

In some embodiments, the monopotassium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.0±0.2, 9.9±0.2, 11.3±0.2, 13.3±0.2, 16.9±0.2, 18.1±0.2, 19.1±0.2, 20.0±0.2, 21.1±0.2, 23.5±0.2, 24.8±0.2, and 25.7±0.2 degrees 2θ. In some such embodiments, the monopotassium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.0±0.2, 9.9±0.2, 11.3±0.2, 13.3±0.2, 16.9±0.2, 18.1±0.2, 19.1±0.2, 20:0±0.2, 21.1±0.2, 23.5±0.2, 24.8±0.2, and 25.7±0.2 degrees 2θ. In other such embodiments, the monopotassium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.0±0.2, 9.9±0.2, 11.3±0.2, 13.3±0.2, 16.9±0.2, 18.1±0.2, 19.1±0.2, 20.0±0.2, 21.1±0.2, 23.5±0.2, 24.8±0.2, and 25.7±0.2 degrees 2θ.

In some embodiments, the monopotassium salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 5.0±0.2, 9.9±0.2, 11.3±0.2, 13.3±0.2, 16.9±0.2, 18.1±0.2, 19.1±0.2, 20.0±0.2, 21.1±0.2, 21.5±0.2, 23.5±0.2, 24.8±0.2, and 25.7±0.2 degrees 2θ. In some such embodiments, the monopotassium salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 5.0±0.2, 9.9±0.2, 11.3±0.2, 13.3±0.2, 16.9±0.2, 18.1±0.2, 19.1±0.2, 20.0±0.2, 21.1±0.2, 21.5±0.2, 23.5±0.2, 24.8±0.2, and 25.7±0.2 degrees 2θ. In other such embodiments, the monopotassium salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 5.0±0.2, 9.9±0.2, 11.3±0.2, 13.3±0.2, 16.9±0.2, 18.1±0.2, 19.1±0.2, 20.0±0.2, 21.1±0.2, 21.5±0.2, 23.5±0.2, 24.8±0.2, and 25.7±0.2 degrees 2θ.

In some embodiments, the monopotassium salt has an X-ray powder diffraction pattern substantially as shown in FIG. 17. The 2θ values for the peaks in FIG. 17 (and their intensities) are as follows: 4.97 (100), 9.94 (7), 11.33 (15), 13.28 (7), 16.91 (5), 18.13 (7), 19.14 (4), 20.00 (4), 21.13 (4), 21.45 (4), 23.54 (4), 24.84 (3), and 25.67 (6).

This invention also relates, in part, to a process for preparing the monopotassium salt. The monopotassium salt was prepared in aqueous medium. 0.366 ml of 1M aqueous KOH was added to 150.56 mg of compound IB-L0-2.3 (molar ratio 1:1.2). The resulting suspension was equilibrated at ambient conditions. The monopotassium salt was formed on the following day through a solution-mediated process. Alternatively, the monopotassium salt was prepared by suspending compound IB-L0-2.3 (300 mg) in 3 ml acetonitrile. KOH in 1.3 mL of H₂O (2.1 molar equivalent) was added. Additional 1 ml H₂O was added to dissolve all solids. Afterwards, 12 ml acetonitrile was added to induce crystallization. The stoichiometry of the salt was confirmed by ion chromatograph.

G5. Crystalline Forms of N-(6-(3-Tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, Monocholine Salt

This invention also relates, in part, to crystalline forms of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, monocholine salt, namely the pattern A and pattern B crystalline forms discussed below.

This invention relates, in part, to a pattern A crystalline monocholine salt.

In some embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 10.9±0.2, 12.1±0.2, 13.4±0.2, 15.5±0.2, 17.0±0.2, 17.8±0.2, 18.3±0.2, 19.5±0.2, and 21.9±0.2 degrees 2θ. In some such embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 10.9±0.2, 12.1±0.2, 13.4±0.2, 15.5±0.2, 17.0±0.2, 17.8±0.2, 18.3±0.2, 19.5±0.2, and 21.9±0.2 degrees 2θ. In other such embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 10.9±0.2, 12.1±0.2, 13.4±0.2, 15.5±0.2, 17.0±0.2, 17.8±0.2, 18.3±0.2, 19.5±0.2, and 21.9±0.2 degrees 2θ.

In some embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 10.9±0.2, 12.1±0.2, 13.0±0.2, 13.4±0.2, 13.6±0.2, 15.5±0.2, 17.0±0.2, 17.8±0.2, 18.3±0.2, 19.5±0.2, 19.7±0.2, and 21.9±0.2 degrees 2θ. In some such embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of degrees 2θ. In other such embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of degrees 2θ.

In some embodiments, the pattern A monocholine salt has an X-ray powder diffraction pattern substantially as shown in FIG. 19. The 2θ values for the peaks in FIG. 19 (and their intensities) are as follows: 10.94 (42), 12.06 (20), 12.96 (26), 13.42 (64), 13.64 (27), 15.51 (18), 16.98 (78), 17.81 (26), 18.32 (100), 19.49 (48), 19.70 (33), and 21.91 (22).

This invention also relates, in part, to a process for preparing the pattern A monocholine salt. It was prepared in a solvent mixture of tetrahydrofuran (THF) and methanol. Compound IB-L0-2.3 (56.79 mg) was dissolved in THF at 60° C., 40.01 mg of choline hydroxide solution (45 wt % in methanol) was added resulting in a molar ratio of 1:1.2. The crystals formed upon natural cooling to ambient temperature.

This invention also relates, in part, to a pattern B crystalline monocholine salt.

In some embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.0±0.2, 9.4±0.2, 11.0±0.2, 13.0±0.2, 13.7±0.2, 15.9±0.2, 17.0±0.2, 18.3±0.2, 18.9±0.2, 19.8±0.2, and 22.1±0.2 degrees 2θ. In some such embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.0±0.2, 9.4±0.2, 11.0±0.2, 13.0±0.2, 13.7±0.2, 15.9±0.2, 17.0±0.2, 18.3±0.2, 18.9±0.2, 19.8±0.2, and 22.1±0.2 degrees 2θ. In other such embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.0-0.2, 9.4±0.2, 11.0±0.2, 13.0±0.2, 13.7±0.2, 15.9±0.2, 17.0±0.2, 18.3±0.2, 18.9±0.2, 19.8±0.2, and 22.1±0.2 degrees 2θ.

In some embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.0±0.2, 9.4±0.2, 11.0±0.2, 13.0±0.2, 13.3±0.2, 13.7±0.2, 15.9±0.2, 17.0±0.2, 17.4±0.2, 18.3±0.2, 18.9±0.2, 19.8±0.2, 21.8±0.2, and 22.1±0.2 degrees 2θ. In some such embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.0±0.2, 9.4±0.2, 11.0±0.2, 13.0±0.2, 13.3±0.2, 13.7±0.2, 15.9±0.2, 17.0±0.2, 17.4±0.2, 18.3±0.2, 18.9±0.2, 19.8±0.2, 21.8±0.2, and 22.1±0.2 degrees 2θ. In other such embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.0±0.2, 9.4±0.2, 11.0±0.2, 13.0±0.2, 13.3±0.2, 13.7±0.2, 15.9±0.2, 17.0±0.2, 17.4±0.2, 18.3±0.2, 18.9±0.2, 19.8±0.2, 21.8±0.2, and 22.1±0.2 degrees 2θ.

In some embodiments, the pattern B monocholine salt has an X-ray powder diffraction pattern substantially as shown in FIG. 21. The 2θ values for the peaks in FIG. 21 (and their intensities) are as follows: 7.96 (41), 9.38 (34), 10.96 (24), 12.98 (76), 13.34 (33), 13.72 (37), 15.90 (100), 17.03 (60), 17.42 (37), 18.30 (31), 18.85 (93), 19.82 (90), 21.76 (38), and 22.06 (46).

This invention also relates, in part, to a process for preparing the pattern B monocholine salt. It was prepared by suspending amorphous choline salt in ethyl acetate for seven days.

G6. Crystalline Form of N-(6-(3-Tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, Dicholine Salt

This invention also relates, in part, to a crystalline form of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, dicholine salt.

In some embodiments, the dicholine salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.6±0.2, 11.0±0.2, 12.9±0.2, 17.0±0.2, 17.5±0.2, 18.9±0.2, 19.8±0.2, and 21.9±0.2 degrees 2θ. In some such embodiments, the dicholine salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.6±0.2, 11.0±0.2, 12.9±0.2, 17.0±0.2, 17.5±0.2, 18.9±0.2, 19.8±0.2, and 21.9±0.2 degrees 2θ. In other such embodiments, the dicholine salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.6±0.2, 11.0±0.2, 12.9±0.2, 17.0±0.2, 17.5±0.2, 18.9±0.2, 19.8±0.2, and 21.9±0.2 degrees 2θ.

In some embodiments, the dicholine salt has an X-ray powder diffraction pattern comprising one or more peaks selected from the group consisting of 8.6±0.2, 11.0±0.2, 12.9±0.2, 17.0±0.2, 17.5±0.2, 18.9±0.2, 19.8±0.2, 21.9±0.2, and 22.1±0.2 degrees 2θ. In some such embodiments, the dicholine salt has an X-ray powder diffraction pattern comprising three or more peaks selected from the group consisting of 8.6±0.2, 11.0±0.2, 12.9±0.2, 17.0±0.2, 17.5±0.2, 18.9±0.2, 19.8±0.2, 21.9±0.2, and 22.1±0.2 degrees 2θ. In other such embodiments, the dicholine salt has an X-ray powder diffraction pattern comprising five or more peaks selected from the group consisting of 8.6±0.2, 11.0±0.2, 12.9±0.2, 17.0±0.2, 17.5±0.2, 18.9±0.2, 19.8±0.2, 21.9±0.2, and 22.1±0.2 degrees 2θ.

In some embodiments, the dicholine salt has an X-ray powder diffraction pattern substantially as shown in FIG. 23. The 2θ values for the peaks in FIG. 23 (and their intensities) are as follows: 8.62 (28), 10.98 (29), 12.93 (50), 15.88 (100), 17.03 (42), 17.47 (29), 18.88 (66), 19.82 (57), 21.89 (42), 2.07 (41).

This invention also relates, in part, to a process for preparing the dicholine salt. It was prepared by suspending compound IB-L0-2.3 (200 mg) in 0.75 ml MeOH. Choline hydroxide in MeOH (210 ml, 45 wt %, 2.10 molar equivalent) was added. The reaction mixture was concentrated, and 4 ml acetonitrile and 6 ml isopropyl acetate were added. The reaction mixture was then seeded with trace amount of the compound IB-L0-2.3 monopotassium salt seed crystals (discussed above). The reaction mixture started to crystallize shortly after. The stoichiometry of the salt was determined by solution ¹H NMR.

H. Compositions

This invention also is directed, in part, to compositions comprising one or more compounds and/or salts of the invention (including the crystalline compounds and salts discussed in section G above). In some embodiments, the compositions comprise one or more substantially phase pure crystalline forms (compounds/salts/solvates/hydrates) discussed in section G above. The compositions can be pharmaceutical compositions.

In some embodiments, the compositions further comprise one or more additional therapeutic agents. Such therapeutic agents can, but need not be, additional HCV inhibitors.

The preferred composition depends on the method of administration, and typically comprises one or more conventional pharmaceutically acceptable carriers, adjuvants, and/or vehicles (together referred to as “excipients”). Formulation of drugs is generally discussed in, for example, Hoover, J., Remington's Pharmaceutical Sciences (Mack Publishing Co., 1975) and Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems (Lippincott Williams & Wilkins, 2005).

Solid dosage forms for oral administration include, for example, capsules, tablets, pills, powders, and granules. In such solid dosage forms, the compounds or salts are ordinarily combined with one or more excipients. If administered per os, the compounds or salts can be mixed with, for example, lactose, sucrose, starch powder, cellulose esters of alkanoic acids, cellulose alkyl esters, talc, stearic acid, magnesium stearate, magnesium oxide, sodium and calcium salts of phosphoric and sulfuric acids, gelatin, acacia gum, sodium alginate, polyvinylpyrrolidone, and/or polyvinyl alcohol, and then tableted or encapsulated for convenient administration. Such capsules or tablets can contain a controlled-release formulation, as can be provided in, for example, a dispersion of the compound or salt in hydroxypropylmethyl cellulose. In the case of capsules, tablets, and pills, the dosage forms also can comprise buffering agents, such as sodium citrate, or magnesium or calcium carbonate or bicarbonate. Tablets and pills additionally can be prepared with enteric coatings.

Liquid dosage forms for oral administration include, for example, pharmaceutically acceptable emulsions (including both oil-in-water and water-in-oil emulsions), solutions (including both aqueous and non-aqueous solutions), suspensions (including both aqueous and non-aqueous suspensions), syrups, and elixirs containing inert diluents commonly used in the art (e.g., water). Such compositions also can comprise, for example, wetting, emulsifying, suspending, flavoring (e.g., sweetening), and/or perfuming agents.

Parenteral administration includes subcutaneous injections, intravenous injections, intramuscular injections, intrasternal injections, and infusion. Injectable preparations (e.g., sterile injectable aqueous or oleaginous suspensions) can be formulated according to the known art using suitable dispersing, wetting agents, and/or suspending agents. Acceptable vehicles and solvents include, for example, water, 1,3-butanediol, Ringer's solution, isotonic sodium chloride solution, bland fixed oils (e.g., synthetic mono- or diglycerides), fatty acids (e.g., oleic acid), dimethyl acetamide, surfactants (e.g., ionic and non-ionic detergents), and/or polyethylene glycols.

Formulations for parenteral administration may, for example, be prepared from sterile powders or granules having one or more of the excipients mentioned for use in the formulations for oral administration. A compound or salt of the invention can be dissolved in water, polyethylene glycol, propylene glycol, ethanol, corn oil, cottonseed oil, peanut oil, sesame oil, benzyl alcohol, sodium chloride, and/or various buffers. The pH may be adjusted, if necessary, with a suitable acid, base, or buffer.

Suppositories for rectal administration can be prepared by, for example, mixing a compound or salt of the invention with a suitable nonirritating excipient that is solid at ordinary temperatures, but liquid at the rectal temperature, and will therefore melt in the rectum to release the drug. Suitable excipients include, for example, cocoa butter; synthetic mono-, di-, or triglycerides, fatty acids, and/or polyethylene glycols.

Topical administration includes the use of transdermal administration, such as transdermal patches or iontophoresis devices.

Other excipients and modes of administration known in the pharmaceutical art also may be used.

The preferred total daily dose of the compound or salt (administered in single or divided doses) is typically from about 0.001 to about 100 mg/kg, more preferably from about 0.001 to about 30 mg/kg, and even more preferably from about 0.01 to about 10 mg/kg (i.e., mg of the compound or salt per kg body weight). Dosage unit compositions can contain such amounts or submultiples thereof to make up the daily dose. In many instances, the administration of the compound or salt will be repeated a plurality of times. Multiple doses per day typically may be used to increase the total daily dose, if desired.

Factors affecting the preferred dosage regimen include the type, age, weight, sex, diet, and condition of the patient; the severity of the pathological condition; the severity of the pathological condition; the route of administration; pharmacological considerations, such as the activity, efficacy, pharmacokinetic, and toxicology profiles of the particular compound or salt used; whether a drug delivery system is utilized; and whether the compound or salt is administered as part of a drug combination. Thus, the dosage regimen actually employed can vary widely, and therefore, can derive from the preferred dosage regimen set forth above.

I. Kits

This invention also is directed, in part, to a kit comprising one or more compounds and/or salts of the in invention. The kit can optionally contain one or more additional therapeutic agents and/or instructions for, for example, using the kit.

J. Methods of Use

This invention also is directed, in part, to a method for inhibiting replication of an RNA virus. The method comprises exposing the virus to one or more compounds and/or salts of this invention. In some embodiments, replication of the RNA virus is inhibited in vitro. In other embodiments, replication of the RNA virus is inhibited in vivo. In some embodiments, the RNA virus whose replication is being inhibited is a single-stranded, positive sense RNA virus. In some such embodiments, the RNA virus whose replication is being inhibited is a virus from the Flaviviridae family. In some such embodiments, the RNA virus whose replication is being inhibited is HCV.

This invention also is directed, in part, to a method for inhibiting HCV RNA polymerase. The method comprises exposing the polymerase with one or more compounds and/or salts of this invention. In some embodiments, HCV RNA polymerase activity is inhibited in vitro. In other embodiments, HCV RNA polymerase activity is inhibited in vivo.

The term “inhibiting” means reducing the level of RNA virus replication/HCV polymerase activity either in vitro or in vivo. For example, if a compound/salt of the invention reduces the level of RNA virus replication by at least about 10% compared to the level of RNA virus replication before the virus was exposed to the compound/salt, then the compound/salt inhibits RNA virus replication. In some embodiments, the compound/salt can inhibit RNA virus replication by at least about 20%, at least about 30%, at least about 40%, at least about 50%, at least about 60%, at least about 70%, at least about 80%, at least about 90%, or at least about 95%.

This invention also is directed, in part, to a method for treating a disease that can be treated by inhibiting HCV RNA polymerase. Thus, this invention also is directed, in part, to a method for treating hepatitis C in an animal in need of such treatment. These methods comprise administering to the animal one or more compounds and/or salts of the invention, and, optionally, one or more additional therapeutic agents. In some embodiments, a therapeutically effective amount of the compound(s) and/or salt(s) is administered to the animal. “Treating” means ameliorating, suppressing, eradicating, preventing, reducing the risk of, and/or delaying the onset of the disease being treated. Applicants specifically intend that the term “treating” encompass administration of the compounds and/or salts of the invention to an HCV-negative patient that is a candidate for an organ transplant. The methods of treatment are particularly suitable for use with humans, but may be used with other animals, particularly mammals. A “therapeutically-effective amount” or “effective amount” is an amount that will achieve the goal of treating the targeted condition.

In some embodiments, the methods comprise combination therapy, wherein the compound(s) and/or salt(s) of the invention is/are co-administered with a second (or even a third, fourth, etc.) compound, such as, for example, another therapeutic agent used to treat hepatitis C (e.g., interferon or interferon/ribavirin combination, or an HCV inhibitor such as, for example, an HCV polymerase inhibitor or an HCV protease inhibitor). The compound(s) and/or salt(s) of this invention can also be co-administered with therapeutic agents other than therapeutic agents used to treat hepatitis C (e.g., anti-HIV agents). In these co-administration embodiments, the compound(s) and/or salt(s) of the invention and the second, etc. therapeutic agent(s) may be administered in a substantially simultaneous manner (e.g., or within about 5 minutes of each other), in a sequential manner, or both. It is contemplated that such combination therapies may include administering one therapeutic agent multiple times between the administrations of the other. The time period between the administration of each agent may range from a few seconds (or less) to several hours or days, and will depend on, for example, the properties of each composition and active ingredient (e.g., potency, solubility, bioavailability, half-life, and kinetic profile), as well as the condition of the patient. The compound(s) and/or salt(s) of this invention and the second, etc. therapeutic agent may also be administered in a single formulation.

This invention also is directed, in part, to a use of one or more compounds and/or salts of the invention, and, optionally one or more additional therapeutic agents to prepare a medicament. In some embodiments, the medicament is for co-administration with one or more additional therapeutic agents.

In some embodiments, the medicament is for inhibiting replication of an RNA virus.

In some embodiments, the medicament is for treating hepatitis C.

This invention also is directed, in part, to one or more compounds and/or salts of the invention, and, optionally one or more additional therapeutic agents, for use as a medicament. In some embodiments, the medicament is for inhibiting replication of an RNA virus. In other embodiments, the medicament is for treating hepatitis C.

K. Intermediate Compounds

This invention also is directed, in part, to intermediates that correspond in structure to formula II that can be used to prepare the compounds of formula I (and their salts)(although some intermediates can also be used, just like the compounds of formula I, as HCV inhibitors, and one skilled in the art can determine such ability of the compounds of formula II by utilizing, for example, the methods discussed below):

In formula II:

, R¹, R², R³, R⁴, and R⁵ are as discussed above for the compounds of formula I; and

X² is halo.

The various embodiments for

, R¹, R², R³, R⁴, and R⁵ (as well as their combinations) discussed above apply to the compounds of formula II. As to X², in some embodiments, X² is selected from the group consisting of chloro, bromo, and iodo. In other embodiments, X² is selected from the group consisting of chloro and bromo. In yet other embodiments, X² is selected from the group consisting of chloro and iodo. In yet other embodiments, X² is selected from the group consisting of iodo and bromo. In further embodiments, X² is fluoro. In yet further embodiments, X² is chloro. In yet further embodiments, X² is bromo. And in yet further embodiments, X² is iodo.

The various embodiments for

, R¹, R², R³, R⁴, R⁵, and X² discussed above can be combined to form various embodiments of compounds of formula II, and all embodiments of compounds of formula II so formed are within the scope of Applicants' invention. Some exemplary embodiments of the compounds (and salts thereof) of formula II are discussed below.

In some embodiments, the compounds of formula H correspond in structure to formula IIA:

In other embodiments, the compounds of formula II correspond in structure to formula IIB:

In some embodiments of the compounds of formula II:

R¹ is selected from the group consisting of hydrogen, methyl, and nitrogen-protecting group;

R² is selected from the group consisting of hydrogen and halo;

R³ is selected from the group consisting of hydrogen and halo;

R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the C₁-C₄-alkyl optionally is substituted with up to three         substituents independently selected from the group consisting of         halo, oxo, hydroxy, alkyloxy, and trimethylsilyl, and     -   (b) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl, halo,         and alkylsulfonylamino;

R⁵ is selected from the group consisting of hydrogen, hydroxy, alkyloxy, and halo; and

X² is selected from the group consisting of chloro, bromo, and iodo.

In some embodiments of the compounds of formula II:

is a double carbon-carbon bond;

R¹ is hydrogen;

R² is selected from the group consisting of hydrogen and halo;

R³ is hydrogen;

R⁴ is tert-butyl;

R⁵ is selected from the group consisting of hydrogen, hydroxy, and methoxy; and

X² is selected from the group consisting of bromo and iodo.

In some embodiments of the compounds of formula II:

R¹ is selected from the group consisting of hydrogen and methyl;

R² is selected from the group consisting of hydrogen and methyl;

R³ is selected from the group consisting of hydrogen and methyl;

R⁴ is tert-butyl;

R⁵ is selected from the group consisting of hydroxy and methoxy; and

X² is selected from the group consisting of chloro, bromo, and iodo.

In some embodiments of the compounds of formula II:

is a double carbon-carbon bond;

R¹ is hydrogen;

R² is hydrogen;

R³ is hydrogen;

R⁴ is tert-butyl;

R⁵ is selected from the group consisting of hydroxy and methoxy; and

X² is selected from the group consisting of chloro, bromo, and iodo.

In some embodiments, the compound of formula II is selected from the group consisting of

The discussion below provides instructions for the preparation of intermediate compounds of formula II (and salts thereof).

L. Starting Compounds

This invention also is directed, in part, to starting compounds that correspond in structure to formula III that can be used to prepare the compounds of formulas II and I (and their salts):

In formula III,

, R¹, R², and R³ are as discussed above for the compounds of formula I and II. The various embodiments for

, R¹, R², and R³ (as well as their combinations) discussed above apply to the compounds of formula III. The various embodiments for

, R¹, R², and R³ discussed above can be combined to form various embodiments of compounds of formula III, and all embodiments of compounds of formula III so formed are within the scope of Applicants' invention. Some exemplary embodiments of the compounds (and salts thereof) of formula III are discussed below.

In some embodiments of the compounds of formula III:

R¹ is selected from the group consisting of hydrogen, methyl, and nitrogen-protecting group;

R² is selected from the group consisting of hydrogen and halo; and

R³ is selected from the group consisting of hydrogen and halo.

In some embodiments of the compounds of formula III:

is a double carbon-carbon bond;

R¹ is selected from the group consisting of hydrogen;

R² is selected from the group consisting of hydrogen and halo; and

R³ is selected from the group consisting of hydrogen.

In some embodiments of the compounds of formula III:

R¹ is selected from the group consisting of hydrogen and methyl;

R² is selected from the group consisting of hydrogen and methyl; and

R³ is selected from the group consisting of hydrogen and methyl.

In some embodiments, the compound of formula III is uracil.

This invention also is directed, in part, to starting compounds that correspond in structure to formula IV that can be used to prepare the compounds of formulas II and I (and their salts):

In formula IV:

R⁴, R⁵, and X² are as discussed above for the compounds of formula I and II; and

X¹ is halo.

The various embodiments for R⁴, R⁵, and X² (as well as their combinations) discussed above apply to the compounds of formula IV. As to X¹, in some embodiments, X¹ is selected from the group consisting of chloro, bromo, and iodo. In other embodiments, X¹ is selected from the group consisting of chloro and bromo. In yet other embodiments, X¹ is selected from the group consisting of chloro and iodo. In yet other embodiments, X¹ is selected from the group consisting of iodo and bromo. In further embodiments, X¹ is fluoro. In yet further embodiments, X¹ is chloro. In yet further embodiments, X¹ is bromo. And in yet further embodiments, X¹ is iodo. As to X¹ and X², in some embodiments, X¹ and X² are identical.

The various embodiments for R⁴, R⁵, X¹, and X² discussed above can be combined to form various embodiments of compounds of formula IV, and all embodiments of compounds of formula III so formed are within the scope of Applicants' invention. Some exemplary embodiments of the compounds (and salts thereof) of formula IV are discussed below.

In some embodiments of the compounds of formula IV:

R⁴ is selected from the group consisting of C₁-C₄-alkyl, C₃-C₆-carbocyclyl, and 5-6-membered heterocyclyl, wherein:

-   -   (a) the C₁-C₄-alkyl optionally is substituted with up to three         substituents independently selected from the group consisting of         halo, oxo, hydroxy, alkyloxy, and trimethylsilyl, and     -   (b) the C₃-C₆-carbocyclyl and 5-6-membered heterocyclyl         optionally are substituted with one or two substituents         independently selected from the group consisting of alkyl, halo,         and alkylsulfonylamino;

R⁵ is selected from the group consisting of hydrogen, hydroxy, and alkyloxy;

X¹ is selected from the group consisting of chloro, bromo, and iodo; and

X² is selected from the group consisting of chloro, bromo, and iodo.

In some embodiments of the compounds of formula IV:

R⁴ is selected from the group consisting of tert-butyl;

R⁵ is selected from the group consisting of hydrogen, hydroxy, and methoxy;

X¹ is selected from the group consisting of bromo and iodo; and

X² is selected from the group consisting of bromo and iodo.

In some embodiments of the compounds of formula IV:

R⁴ is selected from the group consisting of tert-butyl;

R⁵ is selected from the group consisting of hydroxy and methoxy;

X¹ is selected from the group consisting of chloro, bromo, and iodo; and

X² is selected from the group consisting of chloro, bromo, and iodo.

In some embodiments of the compounds of formula IV:

R⁴ is tert-butyl;

R⁵ is selected from the group consisting of hydroxy and methoxy;

X¹ is selected from the group consisting of chloro, bromo, and iodo; and

X² is selected from the group consisting of chloro, bromo, and iodo.

In some embodiments, the compound of formula IV is selected from the group consisting of

The discussion below provides instructions for the preparation of starting compounds of formula IV (and salts thereof).

L. Methods for Preparation

This invention also is directed, in part, to a process for preparing compounds of formula II. The process comprises reacting a compound of formula III with a compound of formula IV in the presence of (i) copper (I) salt catalyst and (ii) nitrogenous-heteroaryl ligand:

In the above process, R¹, R², R³, R⁴, R⁵, X¹, and X² are as discussed above.

Applicants have discovered that the process generally results in the substitution of the N1 hydrogen of uracil derivative compound III thus resulting in intermediate compound II. When X² in intermediate compound II is chloro, bromo, or iodo, then compound II is suitable for subsequent reaction (e.g., Suzuki coupling with an appropriate boronic acid or boronate ester) to provide compound of formula I. In other words, when X² in intermediate compound II is chloro, bromo, or iodo, the above process is suitable for preparing compounds of formula I as well.

In some embodiments, compound III is uracil, and compound IV corresponds in structure to a compound selected from the group consisting of compound IV-I, IV-Br, and IV-Cl, with compounds IV-I and IV-Br typically resulting in better yield than compound IV-Cl.

Suitable Cu(I) catalysts include, for example, CuI, CuBr, CuCl, Cu₂O, and CH₃C(O)OCu. In some embodiments, the catalyst is selected from the group consisting of CuI and CuBr. In some such embodiments, the catalyst is CuI. In other such embodiments, the catalyst is CuBr.

In some embodiments, the process is conducted in the presence of a base. In some such embodiments, the base is an inorganic base. Suitable inorganic bases include, for example, potassium, sodium, and cesium salts (e.g., K₂CO₃, K₃PO₄, Cs₂CO₃, Na₂CO₃). In some embodiments, the base is selected from the group consisting of potassium salt and cesium salt. In some such embodiments, the salt is selected from the group consisting of K₃PO₄ and Cs₂CO₃. In some embodiments, the base comprises a potassium salt. In some such embodiments, the potassium salt is K₂CO₃. In other such embodiments, the potassium salt is K₃PO₄. In some embodiments, the base comprises a cesium salt. In some such embodiments, the potassium salt is Cs₂CO₃.

Typically, the process is conducted in the presence of a solvent. Suitable solvents include, for example, dimethylsulfoxide (DMSO), dimethylformamide (DMF), and acetonitrile (MeCN). In some embodiments, the solvent is DMSO.

Typically, the process is conducted at a temperature of from about 40 to about 130° C.

In some embodiments, the nitrogenous heteroaryl ligand comprises 8-hydroxyquinoline. In other embodiments, the ligand comprises 2-(2-pyridyl)-benzimidazole. In yet other embodiments, the ligand comprises a picolinamide compound corresponding in structure to formula V:

In formula V, R¹¹, R¹², R¹³, R¹⁴, R¹⁵, R¹⁶, and R¹⁷ are independently selected from the group consisting of hydrogen, C₁₋₄-perfluoroalkyl, C₁₋₄-alkyloxy, C₁₋₄-haloalkyl, chloro, or cyano. In some embodiments, R¹¹, R¹², R¹³, R¹⁴, R¹⁵, R¹⁶, and R¹⁷ are independently selected from the group consisting of hydrogen, methyl, methoxy, trifluoromethyl, chloro, and cyano. In some embodiments, the ligand of formula V comprises N-(4-cyanophenyl)picolinamide. In other embodiments, the ligand of formula V comprises N-(2-cyanophenyl)picolinamide.

In some embodiments, the process comprises (a) preparing a compound of formula IV; and (b) reacting a compound of formula III with a compound of formula IV in the presence of (i) copper (I) salt catalyst and (ii) nitrogenous heteroaryl ligand, optionally in the presence of inorganic base.

Compound of formula IV-I can be prepared by, for example, converting 2-tert-butylphenol into 2-tert-butyl-4,6-diiodophenol (by, for example, reacting it with NaI and NaOCl), and then converting the 2-tert-butyl-4,6-diiodophenol into 1-tert-butyl-3,5-diiodo-2-methoxybenzene (by, for example, treating it with CH₃I in the presence of a base, such as, for example, NaOH).

Compound of formula IV-Br can be prepared by, for example, converting 2-tert-butylphenol into 2,4-dibromo-6-tert-butylphenol (by, for example, reacting it with 1,3-dibromo-5,5-dimethylimidazo-lidine-2,4-dione), and then converting the 2,4-dibromo-6-tert-butylphenol into 1,5-dibromo-3-tert-butyl-2-methoxybenzene (by, for example, treating it with CH₃I in the presence of KOtBu).

Additional information about the preparation of compounds of formulas I and II (and their salts) is provided in the general discussion and/or specific synthesis examples below. In the discussion below, R¹, R², R³, R⁴, R⁵, L, R^(A), R^(B), R^(C), R^(D), R⁶, R^(E), R^(F), R^(G), R^(H), R^(I), R^(J), R^(K), X¹, and X² have the meaning discussed above unless otherwise stated.

Compound (1-1), wherein R⁷ is, for example, hydrogen or —CO₂Me, and R⁸ is, for example, hydrogen or t-butyl, may be treated with nitric acid in solvents such as, for example, acetic acid or water in a temperature range of about 0 to about 35° C. over about 1 to about 5 h to provide compound (1-2). Compound (1-2) may then be reduced using conditions known to those skilled in the art to furnish the corresponding aniline (1-3). Typical conditions for this reduction include using hydrogen at a pressure of about 1 to about 5 atmospheres in the presence of a catalyst such as, for example, palladium or platinum on charcoal in a solvent such as, for example, tetrahydrofuran, ethyl acetate, ethanol, or hexane at or near ambient temperature over a period of about 1 to about 12 h. Dependent on the functional groups present, an alternative reduction procedure may be more appropriate such as, for example, using iron powder in the presence of a mild acid such as, for example, ammonium chloride or dilute hydrochloric acid at reflux temperatures in a mixture of solvents containing, for example, methanol, water, and/or tetrahydrofuran over about 1 to about 12 h. Another set of reduction conditions includes the use of sodium borohydride in a solvent mixture such as, for example, water and tetrahydrofuran. Yet another set of reduction conditions includes the use of tin(II) chloride in the presence of hydrochloric acid in such solvents as, for example, water and methanol or mixtures thereof.

Compound (1-2) may be modified prior to reduction. For example, treatment of compound (1-2), wherein R⁷ is hydrogen, with iodine monochloride in a mixture of methanol and water at or near ambient temperature over a period of about 8 to about 24 h supplies compound (1-4), wherein X¹ is iodine. Alternatively, compound (1-2) can be treated with pyridinium hydrobromide perbromide in a solvent such as, for example, acetic acid at or near ambient temperature over a period of about 2 to about 16 h to provide compound (1-4), wherein X¹ is bromine. Modifications may be introduced at the phenol moiety in compound (1-4). For example, the phenol may be alkylated with alkyl halides (e.g., methyl iodide), alkyl sulfates (e.g., methyl sulfate), alkenyl halides (e.g., allyl bromide), alkynyl halides (e.g., propargyl bromide) in the presence of a base such as, for example, potassium carbonate in acetone, sodium hydride in dimethylformamide, or potassium t-butoxide in tetrahydrofuran, at temperatures from about 0 to about 35° C. over a period of about 1 to about 24 h to provide compound (1-5), wherein R⁹ is, for example, alkyl, alkenyl, or alkynyl. Alternatively, alkylation may be achieved by using a reagent such as (trimethylsilyl) diazomethane in solvents such as, for example, methanol or t-butyl methyl ether, or mixtures thereof in a sealed tube at or near room temperature over about 8 to about 24 h. Compound (1-5) may subsequently be reduced to compound (1-6) using the iron powder or tin(II) chloride conditions described above. An alternative reduction procedure employs hydrogenation at approximately 1 atmosphere pressure with a catalyst such as 5% platinum on sulfided carbon in a solvent such as methanol. Protection of the resultant aniline of compound (1-6) with, for example, a t-butyl carbamate can be achieved by treatment with di-tert-butyl dicarbonate in a solvent such as, for example, tetrahydrofuran or dioxane at a temperature of about 50 to about 65° C. for about 1 to about 8 h provides compound (1-7).

Modifications may also occur at the phenol moiety in compound (1-2). One skilled in the art may alkylate the phenol of compound (1-2) using, for example, the conditions described above to obtain compound (1-8). Compound (1-8) is transformed into compound (1-9) using, for example, one or more of the appropriate reduction conditions described above.

Another modification of the phenol group in compound (1-2) is sulfonylation to furnish compound (1-8), wherein R⁹ is alkylsulfonyl, carbocyclylsulfonyl, or haloalkylsulfonyl. Such a compound may be prepared by exposing compound (1-2) to sulfonyl chlorides such as, for example, methanesulfonyl chloride, cyclohexanesulfonyl chloride, benzenesulfonyl chloride, or 3-chloropropane sulfonyl chloride in the presence of a base such as, for example, triethylamine, diisopropylethylamine, or pyridine in a solvent such as, for example, dichloromethane at or near ambient temperature for a period of about 1 to about 24 h. One skilled in the art can then transform compound (1-8) into compound (1-9) with an appropriate set of reduction conditions.

Aniline (2-4) can be prepared through use of the Curtius rearrangement. To this end, compound (2-1), wherein R⁴ is not amino, can be treated in refluxing thionyl chloride with a catalytic amount of dimethylformamide for about 1 to about 4 h to obtain acid chloride (2-2). Treatment with thionyl chloride at the reflux temperature in solvents such as, for example, chloroform or toluene also furnishes compound (2-2). Compound (2-2) can be reacted with an aqueous solution of sodium azide in a solvent such as, for example, acetone over about 1 to about 8 h to provide acyl azide (2-3). Compound (2-3) can then undergo a Curtius rearrangement in refluxing solvents such as dioxane or toluene. The intermediate isocyanate is hydrolyzed with an aqueous acid such as dilute hydrochloric acid in a solvent such as dimethoxyethane to provide compound (2-4).

Compound (3-1), wherein R¹⁰ is, for example, hydrogen, bromine, iodine, or —CO₂Me, can be treated with an acrylic acid either neat at or near ambient temperature in a solvent such as, for example, toluene and heated to reflux over a period of about 15 to about 48 h to supply compound (3-2). When excess of an acrylic acid is used, compound (3-3) is produced. Compound (3-2) or (3-3) can be treated with urea in a solvent such as, for example, acetic acid at about 100 to about 120° C. over about 2 to about 48 h to supply compound (3-4).

Compound (4-2) can be prepared from compound (3-1) dissolved in solvents such as, for example, dimethylformamide or dimethylacetamide by the addition of a benzene solution of (E)-3-methoxyacryloyl isocyanate (prepared as described by Santana, L.; et al. J. Heterocyclic Chem. 1999, 36, 293-295.) at a temperature of about −40 to about −15° C. under an inert atmosphere and then warming to ambient temperature for from about 30 min to about 4 h. Compound (4-2) can be treated with an acid such as, for example, sulfuric acid in mixtures of water and ethanol in a temperature range of from about 90 to about 110° C. for about 1 to about 8 h to supply compound (4-3). Alternatively, compound (4-2) can be cyclized to uracil (4-3) under the basic conditions described by Ueno, Y.; et al. J. Org. Chem. 70:7925-7935 (2005).

Phenol (20-1), wherein R⁴ is other than amino, is treated with a source of electrophilic halide, such as, for example, iodine monochloride to provide dihalogenated compound (20-2), wherein X¹ and X² are independently bromine or iodine. Compound (20-2) is transformed to compound (20-3) by reaction of an alkylating agent such as, for example, methyl sulfate with a base such as, for example, potassium carbonate in refluxing acetone. Alternatively, methyl iodide in the presence of a base such as, for example, potassium t-butoxide in a solvent such as, for example, tetrahydrofuran, or dimethylformamide also furnish compound (20-3). In yet another alternative, compound (20-2) can be methylated with (trimethylsilyl)diazomethane in a solvent such as, for example, t-butyl methyl ether. Compound (20-3) can be reacted with uracil, ligand (20-4), copper (I) iodide, and potassium phosphate in dimethyl sulfoxide at about 40° C. to about 100° C. to supply compound (20-5).

For example, when in compound (20-3), R⁴ is tert-butyl, X¹ is iodo, and X² is iodo or bromo, compound (20-3) can be stirred with uracil and compound (20-4) in the presence of CuI and K₂PO₄ in DMSO for about 15 to about 24 h at about 60° C. to supply compound (20-5). Alternatives to ligand (20-4) for making (20-5) are 8-hydroxyquinoline and 2-(2-pyridyl)-benzimidazole.

Compound (25-1) can be brominated by treatment with, for example, pyridinium hydrobromide perbromide in a solvent such as, for example, acetic acid at or near ambient temperature over a period of about 1 to about 8 h to give compound (25-2). The amino group of compound (25-2) can be removed by exposure to t-butyl nitrite in a solvent such as, for example, dimethylformamide at a temperature initially at ambient temperature and then increased to the range of about 50 to about 65° C. to give compound (25-3). Additional aliquots of t-butyl nitrite can be added at ambient temperature followed by heating until the transformation is complete. Compound (25-3) can be reduced to compound (25-4) by, for example, treatment with iron and ammonium chloride.

Compound (26-1), wherein each Z is independently N or CH can be converted to a boronic acid ester for use in Suzuki reactions. For example, compound of formula (26-1) can be converted to compound (26-2), wherein R¹⁴ is hydrogen or methanesulfonyl (when excess methanesulfonyl chloride is used) by treatment with methanesulfonyl chloride in pyridine at approximately ambient temperature in about 1 to about 8 h.

Compound (26-2) can be transformed to compound of (26-3) by treatment with pinacol-borane in the presence of a catalyst such as, for example, tris(dibenzylidineacetone)dipalladium (0), ligand such as, for example, tri-t-butylphosphine, and a base such as triethylamine in solvents such as, for example, tetrahydrofuran, dioxane, or toluene at temperatures ranging from ambient to about 130° C.

Alternatively, compound (26-2) can be reacted with bis(pinacolato)diboron in the presence of a catalyst such as, for example, Combiphos® Pd6, dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct, or palladium acetate in the presence of a ligand such as, for example, 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (XPhos), and a base such as, for example, potassium acetate in solvents such as, for example, toluene, dioxane, tetrahydrofuran, dimethylformamide or dimethyl sulfoxide in temperatures from about 60 to about 130° C. to give compound (26-3).

Compound (26-3) can be converted to protected compound (26-4) by treatment with benzyl chloroformate initially at about 0° C. in the presence of saturated aqueous sodium bicarbonate in a mixture of acetone and water. This can be warmed to ambient temperature and maintained at that temperature for about 12 to about 24 h. Subsequently, compound (26-4) can be converted to the boronic acid pinacol ester (26-5) using the reaction conditions described above.

Compound (26-5), wherein each Z is independently N or CH, can be coupled with compound (1-7) under Suzuki reaction conditions to provide compound (27-3). Such conditions include, for example, use of a palladium catalyst such as, for example, tris(dibenzylidineacetone)palladium (0), palladium acetate, bis(triphenylphosphine)palladium (II) chloride, tetrakis(triphenylphosphine)palladium, or dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct; base such as, for example, potassium carbonate, potassium phosphate, potassium t-butoxide, sodium carbonate, cesium carbonate, or cesium fluoride; and solvent such as, for example, toluene, ethanol, water, or tetrahydrofuran, or mixtures thereof heated in the temperature range from about 40 to about 130° C.

Compound (27-3) can be transformed to compound (27-4) in a three-step process. The initial step involves removal of the t-butoxycarbonyl protecting group with an acid such as, for example, trifluoroacetic acid in solvent such as, for example, dichloromethane or hydrochloric acid in dioxane at room temperature over about 1 to about 24 h. Subsequently, the dihydropyrimidinedione can be introduced as described in Scheme 3.

Compound (27-5) can be obtained from compound (27-4) in a two-step sequence. First, the protecting group is removed from the naphthyl amine under reductive conditions. Typically, hydrogenation (˜1 atmosphere pressure) in the presence of a catalyst such as, for example, 10% palladium on charcoal in a solvent such as, for example, ethyl acetate at or near ambient temperature over a period of about 8 to about 24 h. Second, the naphthyl amine can now be sulfonylated by treatment with methanesulfonyl chloride in the presence of a base such as triethylamine in a solvent (e.g., dichloromethane) at room temperature over about 20 min to about 4 h.

Compound (28-1), wherein each Z is independently N or CH, and R¹⁵ is, for example, hydrogen, —NHSO₂Me, —N(SO₂Me)₂, or methoxy can be coupled with compound (1-7) under Suzuki reaction conditions to provide compound (28-2). Such conditions include, for example, use of palladium catalyst such as, for example, tris(dibenzylidineacetone) palladium (0), palladium acetate, bis(triphenylphosphine)palladium (II) chloride, tetrakis(triphenylphosphine)palladium, or dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct; a base such as potassium carbonate, potassium phosphate, potassium t-butoxide, sodium carbonate, cesium carbonate, or cesium fluoride; and solvent such as, for example, toluene, ethanol, water or tetrahydrofuran, or mixtures thereof heated in the temperature range from about 40 to about 130° C. The reaction is typically deoxygenated with an inert gas such as nitrogen prior to heating. The heating may occur in conventional glassware, a sealed tube, or in a microwave reactor over about 1 to about 24 h.

Compound (28-2) can be transformed to compound (28-3) in a three-step process. The initial step involves removal of the t-butoxycarbonyl protecting group with an acid such as, for example, trifluoroacetic acid in solvent such as, for example, dichloromethane or hydrochloric acid in dioxane at room temperature over about 1 to about 24 h. Subsequently, the uracil can be introduced as described in Scheme 4.

Compound (28-1), wherein each Z is independently N or CH, and R¹⁵ is, for example, hydrogen, —NHSO₂Me, —N(SO₂Me)₂, or methoxy can be coupled with compound of formula (29-2), wherein X¹ is, for example, bromine or iodine, under Suzuki reaction conditions to provide compound of formula (28-3). Such conditions include, for example, use of palladium catalyst such as, for example, tris(dibenzylidineacetone)palladium (0), palladium acetate, bis(triphenylphosphine)palladium (II) chloride, tetrakis(triphenylphosphine) palladium, dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct, or bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane; base such as, for example, potassium carbonate, potassium phosphate, potassium t-butoxide, sodium carbonate, cesium carbonate, or cesium fluoride; and solvent such as, for example, toluene, ethanol, water, or tetrahydrofuran, or mixtures thereof heated in the temperature range from about 40 to about 130° C. The reaction is typically deoxygenated with an inert gas such as nitrogen prior to heating. The heating may occur in conventional glassware, a sealed tube, or in a microwave reactor over about 1 to about 24 h.

Compound (30-1), wherein X¹ is bromine or iodine, n is 1 or 2, and Z is CH or N, can be reacted with bis(pinacolato)diboron in the presence of a catalyst such as, for example, Combiphos® Pd6, dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct, or palladium acetate in the presence of a ligand such as 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (XPhos), and a base such as potassium acetate in solvents such as, for example, toluene, dioxane, tetrahydrofuran, dimethylformamide or dimethyl sulfoxide in temperatures from 60-130° C. to give compound (30-2). The reaction is typically deoxygenated with an inert gas such as nitrogen prior to heating. The heating may occur in conventional glassware, a sealed tube, or in a microwave reactor over 1 to 24 h. Compound (30-3) can be reacted with compound (30-2) to give compound (30-4) employing the conditions described in Scheme 11.

Treatment of compound (30-4) with methanesulfonylhydrazide in solvent such as, for example, tetrahydrofuran, methanol, or ethanol, or a mixture thereof at ambient temperature to about 100° C. over a period of 8 to 48 h provides compound (30-5).

Compound (31-1) can be treated with hexamethylditin or hexabutylditin in the presence of a catalyst such as, for example, bis(triphenylphosphine)palladium (II) chloride in a solvent such as, for example, toluene or dioxane heated to about 50 to about 130° C. to supply compound (31-2). Compound (31-2) can be treated with compound (31-3) in presence of catalyst such as, for example, tris(dibenzy-lidine acetone)palladium (0) and ligand such as tri(2-furyl)phosphine in solvent such as, for example, toluene, dioxane, or tetrahydrofuran heated to about 40 to about 130° C. to give compound (31-4).

Dinitroaniline (34-1) can be sulfonylated with methanesulfonyl chloride in the presence of a base like, for example, pyridine in a solvent such as, for example, dichloromethane at room temperature over a period of about 8 to about 36 h to give compound (34-2). Compound (34-2) can be converted to compound (34-3) using iron powder in the presence of a mild acid such as, for example, ammonium chloride or dilute hydrochloric acid at reflux temperatures in a mixture of solvents, such as, for example, methanol, water, and tetrahydrofuran over about 1 to about 12 h.

Compound (35-1) can be reacted with compound (35-2), wherein Z¹ is O, S, or NH and R¹⁶ is hydrogen, —NHSO₂Me, or NO₂, in the presence of charcoal exposed to air in solvent such as, for example, toluene heated from about 90 to about 110° C. for about 24 to about 72 h to give compound (35-3).

Compound (36-1), wherein Z² is O or S, can be reduced to compound (36-2) using iron powder in the presence of a mild acid such as, for example, ammonium chloride or dilute hydrochloric acid at temperatures of about 60 to about 90° C. in solvents such as, for example, methanol, ethanol, water, and tetrahydrofuran, or mixtures thereof over about 30 min to about 12 h. Compound (39-2) can be sulfonylated with methanesulfonyl chloride in the presence of a base like, for example, pyridine in a solvent such as, for example, dichloromethane at room temperature over a period of about 8 to about 36 h.

Compound (37-1) can be sulfonylated with methanesulfonyl chloride in the presence of a base like, for example, pyridine in a solvent such as, for example, dichloromethane at room temperature over a period of about 8 to about 36 h to give compound (37-2). Compound (37-2) can be reacted with (4-methoxyphenyl)methanethiol in the presence of a base such as, for example, potassium carbonate in a solvent such as, for example, dimethylformamide heated to about 90 to about 110° C. for about 8 to about 24 h to give compound (37-3). Compound (37-3) can be reduced to compound (37-4) using iron powder in the presence of a mild acid such as, for example, ammonium chloride or dilute hydrochloric acid at temperatures of about 60 to about 90° C. in solvent such as, for example, methanol, ethanol, water, and tetrahydrofuran, or mixtures thereof over about 30 min to about 12 h. Compound (37-4) can be transformed to compound (37-5) in the presence of mercury(II) acetate, anisole, and trifluoroacetic acid at about 0° C. for about 30 to about 90 min and subsequently bubbling hydrogen sulfide through the mixture. Compound (37-5) can be treated with compound (37-6) in the presence of p-toluenesulfonic acid and triphenylphosphine in a solvent such as, for example, toluene heated to reflux for about 2 to about 16 h to supply compound (37-7).

Compound (38-1), wherein X¹ is bromine or iodine and Z² is O or S, can be reacted with 2,5-hexanedione in the presence of a p-toluenesulfonic acid and pyridine heated in benzene to give compound of formula (38-2). Compound (38-2) can be reacted with bis(pinacolato)diboron in the presence of a catalyst such as, for example, Combiphos® Pd6, dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct, or palladium acetate in the presence of a ligand such as, for example, 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (XPhos), and a base such as, for example, potassium acetate in a solvent such as, for example, toluene, dioxane, tetrahydrofuran, dimethylformamide or dimethyl sulfoxide at a temperature from about 60 to about 130° C. to give compound (38-3). Compound (38-3) can be reacted with compound (38-4) to give compound (38-5) under Suzuki reaction conditions. Such conditions include, for example, use of a palladium catalyst such as, for example, dihydrogen dichlorobis(di-t-butylphosphinito-KP)palladate(2-), tris(dibenzylidineacetone) palladium (0), palladium acetate, bis(triphenylphosphine)palladium (II) chloride, tetrakis (triphenylphosphine)palladium, or dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct; a base such as, for example, potassium acetate, potassium carbonate, potassium phosphate, potassium t-butoxide, sodium carbonate, cesium carbonate, or cesium fluoride; and solvent such as, for example, toluene, ethanol, water or tetrahydrofuran, or mixtures thereof heated in the temperature range from about 40 to about 130° C.

Compound (38-5) can be treated with hydroxylamine hydrochloride in heated ethanol to remove the pyrrole-protecting group. Then treatment with methanesulfonyl chloride in the presence of a base such as, for example, pyridine in a solvent such as, for example, dichloromethane at or near ambient temperature supplies compound (38-6).

EXAMPLES

The following examples are merely illustrative, and not limiting to this disclosure in any way.

Example A Preparation of (E)-N-(3-tert-butyl-5-iodo-4-methoxyphenylcarbamoyl)-3-methoxy acrylamide

Part A. Preparation of 2-tert-butyl-4-nitrophenol

To a vigorously stirred solution of 2-tert-butylphenol (10 g, 66.6 mmol) in heptane (67 ml) was added at a fast drip a solution of 70% nitric acid (4.25 ml, 66.6 mmol) diluted with water (4.25 ml). The resulting dark red/brown mixture was stirred vigorously for 2 h. The suspended solid was collected by filtration washed with hexane (300 mL), water (200 mL) and once again with hexane (200 mL) to give a cocoa colored powder that was dried to constant mass (4.65 g, 35.6%).

Part B. Preparation of 2-tert-butyl-6-iodo-4-nitrophenol

To the product from Part A (4.5 g, 23.05 mmol) dissolved in MeOH (120 ml) and water (30 mL) was added iodine monochloride (1.155 ml, 23.05 mmol) drop wise over a period of 10 min. The mixture was stirred for 2 h and diluted into 1 L of water and allowed to stand overnight. The solid material was collected by filtration and washed 3×50 mL with water and dried under vacuum overnight to give a tan solid (7.14 g, 96%).

Part C. Preparation of 1-tert-butyl-3-iodo-2-methoxy-5-nitrobenzene

To an ice bath cooled solution of the product from Part B (5.5 g, 17.13 mmol) in MTBE (15 ml) in a 50 mL pressure vessel was added 2.0M TMS diazomethane (12.85 ml, 25.7 mmol) followed by drop-wise addition of methanol (1.0 mL) resulting in calm bubbling. The vessel was sealed and stirred at room temperature for 16 h, cooled and the pressure was released. The solution was partitioned between EtOAc and water. The organic layer was washed with 1.0M HCl, saturated potassium carbonate solution, and saturated NaCl. The organic layer was dried over sodium sulfate, filtered and concentrated to give a red oil that was used without purification (5.4 g, 84%).

Part D. Preparation of 3-tert-butyl-5-iodo-4-methoxyaniline

A mixture of the product from Part C (5.80 g, 17.31 mmol), ammonium chloride (1.389 g, 26.0 mmol), and iron (4.83 g, 87 mmol) in THF/MeOH/water (200 mL total, 2/2/1) was refluxed for 2 h, cooled and filtered through Celite. The filtrate was evaporated and the residue was partitioned between water and EtOAc. The organic layer was washed with saturated brine, dried with sodium sulfate, filtered and evaporated to give a brown oil (5.28 g, 100% yield).

Part E. Preparation of (E)-N-(3-tert-butyl-5-iodo-4-methoxyphenylcarbamoyl)-3-methoxy acrylamide

To a solution of the product from Part E (3.05 g, 10 mmol) in DMF (50 ml) at −20° C. under N₂ was added at a fast drip a 0.4M solution in benzene of (E)-3-methoxyacryloyl isocyanate (50.0 ml, 20.00 mmol, prepared by the method of Santana et al., J. Heterocyclic Chem. 36:293 (1999). The solution was stirred for 15 min at −20° C., warmed to room temperature for 45 min and diluted into EtOAc. The EtOAc layer was washed 4×300 mL with water, 2×100 mL with brine, dried (Na₂SO₄) and concentrated to a brown solid. The residue was triturated in Et₂O/hexane to give a fine powder that was collected by filtration and dried to give a tan powder (2.46 g, 57%).

Example B Preparation of 1-(3-tert-butyl-5-iodo-4-methoxyphenyl)dihydropyrimidine-2,4(1H,3H)-dione

To a suspension of the product from Example A (2.46 g, 5.69 mmol) in ethanol (50 ml) was added a solution of 5.5 mL of H₂SO₄ in 50 mL water and the mixture was heated at 110° C. for 2.5 h to give a clear solution. The solution was cooled and diluted with 50 mL of water while stirring to give an off-white solid that was collected by filtration, washed with water and dried (2.06 g, 90%).

Example C Preparation of 1-(3-tert-butyl-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

Part A. Preparation of 2-tert-butyl-4,6-diiodophenol

A solution of 2-tert-butylphenol (20.0 g, 133 mmol) in methanol (266 mL) was treated with sodium hydroxide pellets (6.39 g, 160 mmol). The mixture was stirred until all the sodium hydroxide had dissolved and was then cooled in an ice-salt bath to −2° C. Sodium iodide (15.0 g, 100 mmol) was added and then 10% sodium hypochlorite solution (45 mL, 73.3 mmol) was added drop wise at a rate such that the solution temperature rose no higher than 1.3° C. This sequence of events was repeated (3×) until a total of 60 g (400 mmol) of sodium iodide had been added and the sodium hypochlorite solution was added until the solution color changed from a light green-yellow color to the color of weak iced tea. This required all but 16 mL of the 180 mL total sodium hypochlorite solution measured out. With continued cooling at ca. 2° C., a solution of sodium thiosulfate pentahydrate (20 g) in water (100 mL) was added drop wise over 20 min. After addition, the solution was acidified to pH 3 by drop wise addition of concentrated hydrochloric acid (ca. 35 mL required of 40 mL placed in the addition funnel). The precipitate was collected by filtration and washed with >1 liter of water. The salmon-colored solid was sucked as dry as possible, and dried in a vacuum oven at 50° C. for 18 h. These procedures afforded the product (49.61 g, 93%) as a tan solid.

Part B. Preparation of 1-tert-butyl-3,5-diiodo-2-methoxybenzene

A solution of the product from Part A (20.0 g, 49.7 mmol) in acetone (140 mL) was treated with methyl iodide (3.9 mL, 8.83 g, 62.2 mmol) and 50% (w/w) sodium hydroxide solution (3.02 mL, 4.58 g, 57.2 mmol) followed by stirring at ambient temperature for 48 h. The mixture was concentrated in vacuo to a volume of ca. 50-60 mL, followed by dilution with heptane (80 mL) and water (50 mL). The layers were separated and the organic layer was extracted with saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded the product (20.59 g, 99%) as a light yellow oil.

Part C. Preparation of 1-(3-tert-butyl-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

A suspension of the product from Part B (12.04 g, 28.9 mmol), uracil (3.89 g, 34.7 mmol), N-(2-cyanophenyl)picolinamide (1.29 g, 5.79 mmol) and tribasic potassium phosphate (12.9 g, 60.8 mmol) in DMSO (181 mL) was degassed by nitrogen sparge for 1 h. The mixture was then treated with copper (I) iodide (551 mg, 2.89 mmol) and degassing was continued for another 10 min. The mixture was then warmed at 60° C. for 18 h. The mixture was then poured into water (600 mL) and acidified to pH 3 by addition of 4N hydrochloric acid solution. The mixture was diluted with ethyl acetate, and the organic layer was extracted with water (3×), saturated ammonium chloride solution (1×) and saturated sodium chloride solution. The solution was dried and treated with (3-mercaptopropyl) silica gel, followed by stirring for 2 h. The mixture was filtered and concentrated in vacuo. The solid obtained was triturated with ether-ethyl acetate (>10:1) and collected by filtration and washed with ether. After drying in a vacuum oven at 50° C. for 2 h, these procedures afforded the product (2.75 g) as a white solid. The mother liquors were concentrated in vacuo to afford an amber solid. This material was chromatographed over a Flash 65 silica gel cartridge, eluting with 20-100% ethyl acetate in hexanes. These procedures afforded a nearly white solid, which was triturated with ether-hexanes and collected by filtration. After drying in a vacuum oven for 3 h, these procedures afforded another 4.31 g of the product as a white solid. Total yield: 7.06 g (61%).

Example D Preparation of 1-(3-tert-Butyl-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

Part A. Preparation of 2-tert-butyl-4,6-diiodophenol

2-tert-Butylphenol (99.95 g, 665.36 mmol) was dissolved in 1250 mL methanol and converted to the corresponding phenoxide with 31.96 g (799.0 mmol, 1.2 equiv.) of sodium hydroxide by stirring the sodium hydroxide pellets at room temperature, and then cooling the reaction mixture in an ice/salt bath. Sodium iodide (299.34 g, 1997.07 mmol, 3.0 equiv.) and 8.3% bleach (1265.83 g, 1411.39 mmol, 2.1 equiv.) were added to the cold reaction solution in four equal portions, the bleach being added while keeping the reaction mixture at <0° C. 500 mL of 20% (w/w) sodium thiosulfate solution was added over an 18-minute period, with the temperature rising from −0.6° C. to 2.5° C. The pH of the reaction mixture was adjusted to approximately 3 by adding 197.5 mL of conc. HCl over a period of 97 min with the reaction temperature going from 1.2° C. to 4.1° C. The resulting slurry was filtered, and the wet cake washed with ˜2 L of water. The wet cake was left on the Buchner funnel under vacuum overnight (approximately 15 h) to yield 289.33 g (potency adjusted yield=254.61 g) of the title product.

Part B. Preparation of 1-tert-butyl-3,5-diiodo-2-methoxybenzene

The product from Part A (93% assay, 21.6 g, 50 mmol) was dissolved in 140 mL of acetone. Methyl iodide (4.2 mL, 67.5 mmol, 1.35 equiv.) was added, followed by 50% aqueous sodium hydroxide (5.0 g, 62.5 mmol, 1.25 equiv.). The reaction was stirred overnight, then concentrated to approximately 50-60 mL. 80 mL of heptanes was added followed by 50 mL of water, and the layers were shaken and separated, and the aqueous layer was back extracted with 20 mL of heptanes. The organic layers were combined and washed twice with 50 mL each of 10% aqueous NaCl to afford 91.1 grams of a heptane solution, which assayed to 19.1 g of the title compound.

Part C. Preparation of 1-(3-tert-Butyl-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

Uracil (33.3 g, 297 mmol, 1.2 equiv.), K₃PO₄ (106 g, 500 mmol, 2.1 equiv.), CuI (4.6 g, 24.2 mmol, 0.1 equiv.), and N-(2-cyanophenyl)picolinamide (6.4 g, 28.7 mmol, 0.12 equiv.) were charged to a flask and inerted with argon. The 1-tert-butyl-3,5-diiodo-2-methoxybenzene was solvent switched into MeCN, dissolved in 1 L DMSO and sparged with argon and added to the solids. The reaction was heated to 60° C. for 16 h. After cooling, the reaction was diluted with 2 L EtOAc and washed with 2.6 L water (back extracted with 3×1 L EtOAc). The combined organic layers were washed with 2×1 L of 0.25M (CuOAc)₂ then 2×830 mL 15% NH₄Cl then 800 mL brine. The organic layer was then concentrated and chased with 1 L heptane, then triturated with refluxing 85:15 (v/v) heptane:iPrOAc for 4 h. After cooling, the product was collected by filtration and washed with an additional 330 mL of 85:15 v/v heptanes:EtOAc to yield after drying 66.9 g (70% yield) of the product as a white solid.

Example E Preparation of N-(6-(3-tert-Butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

A solution of 100 mL of water and 300 mL of THF was sparged with nitrogen and then transferred via canula and nitrogen pressure to a flask containing 19.9965 g (49.96 mmol) of the product from Example D, 20.8234 g (59.97 mmol, 1.20 equivalents) of N-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl)methanesulfonamide, and 21.8711 g (103.03 mmol, 2.06 equivalents) of potassium phosphate which had been purged with nitrogen. The resulting solution was again sparged with nitrogen.

THF (100 mL) was sparged with nitrogen and then transferred via canula and nitrogen pressure to a flask containing 462.8 mg (0.51 mmol, 0.01 equivalents) of Pd₂dba₃ and 735.8 mg (2.52 mmol, 0.05 equivalents) of 1,3,5,7-tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, which had been purged with nitrogen. The resulting solution was again sparged with nitrogen.

The initial THF/water solution was transferred via canula and nitrogen pressure to the flask containing the catalyst and ligand in THF. The reaction was warmed to 50° C. and stirred overnight under positive nitrogen pressure. A sample of the reaction was taken the following morning. HPLC of the sample showed 0.28 PA % iodouracil starting material, 76.8 PA % product, and 5.2 PA % boronate.

The reaction was cooled to room temperature and washed, in three portions, with a solution of 5.84 g of L-cysteine and 81.4 g of sodium chloride in 550 mL of water which had been sparged with nitrogen. The THF solution was filtered through a celite pad. The pad was rinsed with 100 mL of THF, which was combined with the original THF solution. The THF solution was concentrated on the rotary evaporator to 136 g. To the white slurry was added 405 mL of ethyl acetate with good agitation. The slurry was filtered after stirring overnight. The wet cake was washed with 2×50 mL of ethyl acetate. The solid, an ethyl acetate solvate, was dried in the vacuum oven at 50° C. It weighed 25.49 g.

The solid and 8.7 g of 3-mercaptopropyl derivatized silica gel was stirred in 500 mL of THF then filtered through a celite pad. The filtrate was concentrated on the rotary evaporator to give 13.08 g of white solid. The solid that had been filtered off on the celite pad was extracted with 500 mL of THF at 60° C. The THF solution was concentrated to 66 g and treated with 206 mL of ethyl acetate. The solid which precipitated was filtered and dried, yielding 9.13 g of product. This solid was combined with the original solid and slurried in 100 mL of 200 proof 3A ethanol. It was filtered and dried in the vacuum oven at 50° C. to give 20.74 g of product.

Example 1 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IA-L0-2.9)

Part A. Preparation of 6-bromo-2-naphthoic acid

A solution of methyl 6-bromo-2-naphthoate (7.70 g, 29.0 mmol) in 2:1 THF:water (150 mL) was treated with lithium hydroxide hydrate (2.44 g, 58.1 mmol) followed by stirring at room temperature for 48 h. Concentrated under vacuum, diluted with water and cooled to 0° C. Acidified to pH3 with 4N HCl. Solids were collected by filtration, dissolved in toluene-EtOAc (ca. 2 L) and washed with brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Brown solid was triturated with ether, collected by filtration, and dried under vacuum to give the title compound as a nearly white solid (5.07 g, 70%).

Part B. Preparation of 6-bromonaphthalen-2-amine

A solution of the product Part A (5.07 g, 20.19 mmol) and triethylamine (4.22 mL, 3.07 g, 30.3 mmol) in dry DMF (155 mL) was treated with the diphenylphosphoroyl azide (6.55 mL, 8.34 g, 30.3 mmol) followed by stirring at room temperature for 3 h. The solution was then treated with water (20 mL) followed by warming at 100° C. for 1 h. The solution was cooled and the flask fitted with a short-path distillation head and the DMF removed by distillation under high vacuum. The solid residue was dissolved in EtOAc and washed with saturated sodium bicarbonate solution. Filtered through celite and the filtrate was washed with water (3×) and then with brine. Dried over Na₂SO₄, filtered and concentrated under vacuum to give the title compound as a beige solid (4.48 g, 100%).

Part C. Preparation of benzyl 6-bromonaphthalen-2-ylcarbamate

A mixture of the product from Part B (1.79 g, 8.06 mmol) and saturated sodium bicarbonate solution (18 mL) in acetone (40 mL) at 0° C. was treated drop wise with benzyl chloroformate. The mixture was stirred at 0° C. for 1 h, and then allowed to gradually warm to room temperature over 18 h. The mixture was diluted with EtOAc and water and the layers separated. The organic layer was extracted with water and washed with brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave the title compound as a pink solid (1.5 g, 52%).

Part D. Preparation of benzyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl carbamate

A resealable Schlenk tube containing a solution of the product from Part C (1.42 g, 3.99 mmol), bis(pinacolato)diboron (1.11 g, 4.39 mmol), and potassium acetate (1.17 g, 11.96 mmol) in DMF (28 mL) was degassed by three freeze-thaw cycles. The solution was treated with 1,1′-bis(diphenyl phosphino)ferrocene palladium (II) chloride dichloromethane complex (98 mg, 0.12 mmol), followed by degassing by two additional freeze-thaw cycles. The Schlenk tube was then sealed and the mixture warmed at 80° C. for 18 h. Cooled and diluted with ethyl acetate and water. The mixture was treated with Darco G-60 and then filtered through celite. The filtrate was extracted with water (4×) and saturated sodium chloride solution. Dried over Na₂SO₄, filtered and concentrated under vacuum afforded a light brown oil. Purification by silica gel column chromatography eluting with EtOAc/hexane gave the title compound as a colorless oil (910 mg, 57%).

Part E. Preparation of 2-tert-butyl-4-nitrophenol

To a vigorously stirred solution of 2-tert-butylphenol (10 g, 66.6 mmol) in heptane (67 ml) was added at a fast drip a solution of 70% nitric acid (4.25 ml, 66.6 mmol) diluted with water (4.25 ml). The resulting dark red/brown mixture was stirred vigorously for 2 h. The suspended solid was collected by filtration washed with hexane (300 mL), water (200 mL) and once again with hexane (200 mL) to give a cocoa colored powder that was dried to constant mass (4.65 g, 35.6%).

Part F. Preparation of 2-bromo-6-tert-butyl-4-nitrophenol

A solution of the product from Part E (1.0 g, 5.12 mmol) in glacial acetic acid (10.25 mL) was treated portion wise with pyridine hydrobromide perbromide (1.80 g, 5.63 mmol) followed by stirring at room temperature for 2 h. Additional pyridinium hydrobromide perbromide (3.6 g) was added in two portions and after another 3 h of stirring, the reaction was complete. The mixture was poured into ice water, and the mixture treated with a small amount of sodium sulfite. The resulting solid was filtered and dried under vacuum to give the title compound as a brown solid (1.40 g, 100%).

Part G. Preparation of 1-bromo-3-tert-butyl-2-methoxy-5-nitrobenzene

A solution of the product from Part F (1.40 g, 5.11 mmol) in 10:1 t-butylmethylether-methanol (25.5 mL) was treated with 2.0M trimethylsilyldiazomethane in ether (5.1 mL, 10.21 mmol), followed by stirring at room temperature for 18 h. The mixture was concentrated under vacuum to afford a yellow oil, which was purified by silica gel column chromatography eluting with EtOAc/hexanes to give the title compound as a yellow oil (1.36 g, 92%).

Part H. Preparation of tert-butyl 3-bromo-5-tert-butyl-4-methoxyphenylcarbamate

A solution of the product from Part G (960 mg, 3.33 mmol) in methanol (17 mL) was treated with 5% platinum on sulfided carbon (100 mg), followed by hydrogenation under balloon pressure for 3 h, and then filtered through celite and concentrated under vacuum to afford the 3-bromo-5-tert-butyl-4-methoxyaniline as a yellow oil (860 mg, 3.33 mmol, 100%). A solution of this material in THF (17 mL) was treated with di-tert-butyl dicarbonate (800 mg, 3.66 mmol) followed by warming at reflux for 2 h. Concentration under vacuum afforded a beige solid, which was purified by silica gel column chromatography eluting with EtOAc/hexanes. Solid was triturated with hexanes, collected by filtration, and dried under vacuum to give the title compound as a nearly white solid (890 mg, 75%).

Part I. Preparation of benzyl 6-(3-tert-butyl-5-(tert-butylcarbamoyl)-2-methoxyphenyl) naphthalen-2-yl carbamate

Toluene (928 ul) and EtOH (928 ul) were combined with the product from Part H (133 mg, 0.37 mmol), the product from Part D (299 mg, 0.74 mmol) and 1M sodium carbonate (371 ul, 0.37 mmol) and de-gassed for 20 min with nitrogen. Tetrakis(triphenylphosphine)palladium(0) (8.6 mg, 7.4 mmol) was added and de-gassing continued 5-10 min. Heated at 85-90° C. for 18 h, cooled and concentrated under vacuum. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave the title compound (102 mg, 49%).

Part J. Preparation of benzyl 6-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-ylcarbamate

A solution of the product from Part I (100 mg, 0.18 mmol) in CH₂Cl₂ (1.0 ml) was treated with trifluoroacetic acid (0.5 ml, 6.5 mmol) at room temperature for 1 h. Concentrated under vacuum. Dissolved in ethyl acetate, washed with 10% NaHCO₃, brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Dissolved in toluene (1.0 ml) and added Et₃N (25 ul, 0.18 mmol) and acrylic acid (13 ul, 0.19 mmol) and the mixture was refluxed for 16 h. Concentrated under vacuum. Dissolved in acetic acid (1.0 ml, 17.5 mmol) and added urea (11.9 mg, 0.20 mmol) and refluxed for 72 h. Cooled and poured into ice water, extracted three times with CHCl₃, combined extracts, dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave title compound (57.5 mg, 58%).

Part K. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

Combined the product from Part J (56 mg, 0.10 mmol) and EtOAc (1.0 ml) and added 10% palladium on carbon (10 mg). Stirred under a balloon of H₂ gas for 16 h. Filtered through Celite and concentrated under vacuum. Dissolved in CH₂Cl₂ (1.0 ml), added Et₃N (16 ul, 0.115 mmol) and methanesulfonyl chloride (8.7 ul, 0.112 mmol) and stirred at room temperature for 30 min. Concentrated under vacuum and purification by silica gel column chromatography eluting with EtOAc/hexanes gave the title compound (10 mg, 20%). ¹H NMR (300 MHz, DMSO-d6) δ 1.34-1.48 (m, 9H) 2.71 (t, J=6.62 Hz, 2H) 3.08 (s, 3H) 3.21 (s, 3H) 3.82 (t, J=6.62 Hz, 2H) 7.26 (s, 2H) 7.41 (dd, J=8.82, 1.84 Hz, 1H) 7.59-7.76 (m, 2H) 7.89-8.04 (m, 3H) 10.03 (s, 1H) 10.34 (s, 1H); MS (ESI+) m/z 496 (M+H)⁺; (ESI−) m/z 494 (M−H)⁻.

Example 2A Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.3)

Part A. Preparation of N-(6-bromonaphthalen-2-yl)methanesulfonamide

A solution of the product from Example 1, Part B (4.48 g, 20.17 mmol) in pyridine (100 mL) was treated drop wise with methanesulfonyl chloride (1.97 mL, 2.89 g, 25.2 mmol) followed by stirring at room temperature for 1 h. Diluted with toluene and concentrated under vacuum twice. The residue was extracted with EtOAc and washed with water, 1M citric acid and brine. Treated with Darco G-60, dried over Na₂SO₄, filtered through celite and concentrated under vacuum. Solid was triturated with ether-hexane, collected by filtration and dried under vacuum to give the title compound as a faint pink solid (3.32 g, 55%).

Part B. Preparation of N-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl) methanesulfonamide

A mixture of the product from Part A (1.00 g, 3.33 mmol), bis(pinacolato)diboron (1.27 g, 5.00 mmol), potassium acetate (0.98 g, 9.99 mmol) and Combiphos Pd6 (84 mg, 0.17 mmol) in toluene (22 mL) was heated at reflux for 3 h. Cooled and diluted with ethyl acetate and water. The mixture was treated with Darco G-60 and filtered through celite. The filtrate was washed with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Oil was dissolved in ether and precipitated by addition of hexanes. The product was collected by filtration and washed with hexanes. Evaporation of the filtrate and purification by silica gel column chromatography eluting with EtOAc/hexanes. The title compound from crystallization and chromatography was obtained as a white solid (927 mg, 80%).

Part C. Preparation of tert-butyl 3-tert-butyl-4-methoxy-5-(6-(methylsulfonamido) naphthalen-2-yl)phenylcarbamate

Combined the product from Example 1, Part H (87 mg, 0.243 mmol), the product from Part B (169 mg, 0.486 mmol), toluene (1.0 ml), ethanol (1.0 ml) and sodium carbonate (0.243 ml, 0.243 mmol) in a sealed tube and de-gassed with N₂ gas for 20 min. Tetrakis(triphenylphosphine)palladium(0) (5.61 mg, 4.86 μmol) was added and de-gassing was continued another 5-10 min. Heated at 90-95° C. for 16 h. Cooled and concentrated under vacuum. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave the title compound (92.2 mg, 76%).

Part D. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

A solution of the product from Part C (90 mg, 0.180 mmol) in CH₂Cl₂ (2.0 ml) was treated with trifluoroacetic acid (1.0 ml, 12.98 mmol) at room temperature for 1 h. Concentrated under vacuum, dissolved residue in EtOAc, washed with 10% NaHCO₃, and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Dissolved in DMF (1.4 ml) and cooled to −25° C. and added (E)-3-methoxyacryloyl isocyanate (0.633 ml, 0.361 mmol) drop wise while maintaining the temperature below −10° C. Warmed to room temperature and stirred for 2 h. Poured into ether, washed with water, and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Added a mixture of H₂SO₄ (0.1 ml, 1.876 mmol), water (1.0 ml) and EtOH (1.0 ml) and stirred at 100° C. 16 h. Cooled and concentrated under vacuum. Poured into water, extracted with EtOAc, combined extracts and washed with brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with MeOH/CHCl₃ gave the title compound (53 mg, 59%). ¹H NMR (300 MHz DMSO-d6) δ 1.42 (s, 9H) 3.08 (s, 3H) 3.25 (s, 3H) 5.65 (d, J=7.72 Hz, 1H) 7.34 (dd, J=15.81, 2.57 Hz, 2H) 7.42 (dd, J=8.82, 1.84 Hz, 1H) 7.65-7.76 (m, 2H) 7.80 (d, J=8.09 Hz, 1H) 7.96 (t, J=8.27 Hz, 2H) 8.02 (s, 1H) 10.04 (s, 1H) 11.41 (s, 1H); MS (ESI+) m/z 494 (M+H)⁺; (ESI−) m/z 492 (M−H)⁻.

Example 2B Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.3)

Part A. Preparation of 2-tert-butyl-6-iodo-4-nitrophenol

To the product from Example 1, Part E (4.5 g, 23.05 mmol) dissolved in MeOH (120 ml) and water (30 mL) was added iodine monochloride (1.155 ml, 23.05 mmol) drop wise over a period of 10 min. The mixture was stirred for 2 h and diluted into 1 L of water and allowed to stand overnight. The solid material was collected by filtration and washed 3×50 mL with water and dried under vacuum overnight to give a tan solid (7.14 g, 96%).

Part B. Preparation of 1-tert-butyl-3-iodo-2-methoxy-5-nitrobenzene

To an ice bath cooled solution of the product from Part A (5.5 g, 17.13 mmol) in MTBE (15 ml) in a 50 mL pressure vessel was added 2.0M trimethylsilyl diazomethane (12.85 ml, 25.7 mmol) followed by drop-wise addition of methanol (1.0 mL) resulting in calm bubbling. The vessel was sealed and stirred at room temperature for 16 h, cooled and the pressure was released. The solution was partitioned between EtOAc and water. The organic layer was washed with 1.0M HCl, saturated potassium carbonate solution, and saturated NaCl. The organic layer was dried over sodium sulfate, filtered and concentrated to give a red oil that was used without purification (5.4 g, 84%).

Part C. Preparation of 3-tert-butyl-5-iodo-4-methoxyaniline

A mixture of the product from Part B (5.80 g, 17.31 mmol), ammonium chloride (1.389 g, 26.0 mmol), and iron (4.83 g, 87 mmol) in THF/MeOH/water (200 mL total, 2/2/1) was refluxed for 2 h, cooled and filtered through Celite. The filtrate was evaporated and the residue was partitioned between water and EtOAc. The organic layer was washed with saturated brine, dried with sodium sulfate, filtered and evaporated to give a brown oil (5.28 g, 100% yield).

Part D. Preparation of (E)-N-(3-tert-butyl-5-iodo-4-methoxyphenylcarbamoyl)-3-methoxy acrylamide

To a solution of the product from Part C (3.05 g, 10 mmol) in DMF (50 ml) at −20° C. under N₂ was added at a fast drip a 0.4M solution in benzene of (E)-3-methoxyacryloyl isocyanate (50.0 ml, 20.00 mmol, prepared by the method of Santana et al., J. Heterocyclic. Chem. 36:293 (1999). The solution was stirred for 15 min at −20° C., warmed to room temperature for 45 min and diluted with EtOAc. The organic was washed with water and brine. Dried over Na₂SO₄, filtered and concentrated to a brown solid. The residue was triturated in Et₂O/hexane to give a fine powder that was collected by filtration and dried under vacuum to give the title compound as a tan powder (2.46 g, 57%).

Part E. Preparation of 1-(3-tert-butyl-5-iodo-4-methoxyphenyl)dihydropyrimidine-2,4(1H,3H)-dione

To a suspension of the product from Part D (2.46 g, 5.69 mmol) in ethanol (50 ml) was added a solution of 5.5 mL of H₂SO₄ in 50 mL water and the mixture was heated at 110° C. for 2.5 h to give a clear solution. Cooled and diluted with 50 mL of water while stirring to give an off-white solid that was collected by filtration, washed with water and dried under vacuum to give the title compound (2.06 g, 90%).

Part F. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

In a microwave tube, the product from Part E (104 mg, 0.26 mmol), the product from Example 2A, Part B (108 mg, 0.31 mmol), and 1.0M sodium carbonate solution (312 μL, 0.31 mmol) in 1:1 ethanol-toluene (1.7 mL) was degassed by nitrogen sparge for 15 min. 1,1′-Bis(diphenylphosphino) ferrocene palladium (II) chloride dichloromethane complex (9 mg, 0.011 mmol) was added, and degassing was continued for another 5 min. The tube was sealed and heated in the microwave at 100° C. for 1 h. Diluted with dichloromethane and washed with 1M citric acid solution and brine. The organic layer was then stirred with (3-mercaptopropyl) silica gel for 1 h. Filtered through celite and concentrated under vacuum. Triturated with ether, methanol, and then again with ether to give the title compound as a nearly white solid (32 mg, 25%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.41 (d, J=1.84 Hz, 1H) 10.04 (s, 1H) 8.03 (s, 1H) 7.96 (t, J=8.09 Hz, 2H) 7.80 (d, J=8.09 Hz, 1H) 7.63-7.79 (m, 2H) 7.35-7.45 (m, 1H) 7.37 (d, J=2.57 Hz, 1H) 7.32 (d, J=2.57 Hz, 1H) 5.65 (dd, J=8.09, 2.21 Hz, 1H) 3.25 (s, 3H) 3.09 (s, 3H) 1.43 (s, 9H). MS (+ESI) m/z (rel abundance): 494 (100, M+H), 511 (90, M+NH4), 987 (20, 2M+H), 1009 (8, 2M+Na).

Example 3 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)quinolin-2-yl)methanesulfonamide (compound IB-L0-2.5)

Part A. Preparation of (E)-N-(4-bromophenyl)-3-methoxyacrylamide

Combined 4-bromoaniline (285 mg, 1.659 mmol), CH₂Cl₂ (2.0 ml) and pyridine (0.25 ml, 3.09 mmol) and slowly added (E)-3-methoxyacryloyl chloride (200 mg, 1.659 mmol) and stirred at room temperature for 2 h. The resulting yellow solid was filtered off and washed with water. The solid was dried under vacuum to give the title compound (406 mg, 96%).

Part B. Preparation of 6-Bromoquinolin-2(1H)-one

The product from Part A (395 mg, 1.542 mmol) was added in portions to H₂SO₄ (4.5 ml). Stirred for 3 h at room temperature, poured onto crushed ice. Solid filtered, washed with water and dried under vacuum to give the title compound (203 mg, 59%).

Part C. Preparation of 6-bromo-2-chloroquinoline

To phosphorus oxychloride (2.5 ml, 26.8 mmol) was added, in portions, the product from Part B (200 mg, 0.893 mmol). Refluxed for 1 h, cooled to room temperature and poured onto crushed ice. Extracted with CHCl₃, extracts combined, dried over mgSO₄, filtered and concentrated under vacuum to give the title compound (173 mg, 80%).

Part D. Preparation of 6-bromo-2-aminoquinoline

The product from Part C (173 mg, 0.713 mmol), acetamide (843 mg, 14.27 mmol) and potassium carbonate (493 mg, 3.57 mmol) were combined and heated at 200° C. for 2 h. Cooled to room temperature, whereupon it solidified. Dissolved in a mixture of CHCl₃ and water. Aqueous layer was extracted twice more with CHCl₃, extracts were combined, washed with brine, dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with MeOH/CHCl₃ gave title compound (92 mg, 58%).

Part E. Preparation of N-(6-bromoquinolin-2-yl)-N-(methylsulfonyl)methanesulfonamide

Combined the product from Part D (90 mg, 0.403 mmol) and CH₂Cl₂ (2.0 ml) and added triethylamine (0.062 ml, 0.444 mmol) and methanesulfonyl chloride (0.035 ml, 0.444 mmol). Stirred at room temperature 16 h. Added triethylamine (0.062 ml, 0.444 mmol) and methanesulfonyl chloride (0.035 ml, 0.444 mmol) and stirred at room temperature for h. Diluted with EtOAc, washed with 10% citric acid, 10% NaHCO₃ and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Dissolved in EtOAc and poured into excess hexane. Solid collected by filtration to give the title compound (94 mg, 61%).

Part F. Preparation of N-(methylsulfonyl)-N-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) quinolin-2-yl)methanesulfonamide

Combined the product from Part E (94 mg, 0.248 mmol), bis(pinacolato)diboron (94 mg, 0.372 mmol), potassium acetate (73.0 mg, 0.744 mmol), Combi-Phos®PD6 (6.22 mg, 0.012 mmol) and toluene (1.5 ml) and refluxed 18 h. Cooled to room temperature, diluted with EtOAc and water, filtered through Celite, separated the phases, washed the organic phase with brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave title compound (67 mg, 63%).

Part G. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)quinolin-2-yl)methanesulfonamide

Combined in a microwave tube the product from Example 2B, Part E (27 mg, 0.067 mmol), the product from Part F (37.4 mg, 0.088 mmol), ethanol (1.0 ml), toluene (1.0 ml) and 1M sodium carbonate (0.067 ml, 0.067 mmol) and the solution was degassed using N₂ gas for 20 min. Tetrakis-(triphenyl-phosphine)palladium(0) (1.559 mg, 1.349 μmol) was added and the solution was degassed an additional 5 min. The tube was sealed and heated in the microwave at 100° C. for 45 min. Cooled solution diluted with 1:1 EtOAc:water and filtered through Celite. Aqueous layer was extracted twice more with EtOAc, combined organic extracts and washed with brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with MeOH/CHCl₃ gave title compound (13.7 mg, 41%). ¹H NMR (300 MHz, CDCl₃) δ 1.45 (s, 9H) 3.18 (s, 3H) 3.30 (s, 3H) 5.83 (dd, J=7.91, 2.02 Hz, 1H) 6.99 (d, J=8.82 Hz, 1H) 7.21 (d, J=2.57 Hz, 1H) 7.36 (d, J=7.72 Hz, 1H) 7.52 (d, J=8.46 Hz, 1H) 7.82-7.91 (m, 2H) 7.98 (d, J=9.19 Hz, 1H) 8.29 (s, 1H); MS (ESI+) m/z 495 (M+H)⁺; (ESI−) m/z 493 (M−H)⁻.

Example 4 Preparation of (E)-N′-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide (compound IB-L0-2.4)

Part A. Preparation of 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-one

A mixture of 5-bromo-2,3-dihydro-1H-inden-1-one (2.50 g, 11.85 mmol), bis(pinacolato) diboron (3.61 g, 14.21 mmol), potassium acetate (3.49 g, 35.5 mmol) and Combiphos Pd6 (178 mg, 0.36 mmol) in toluene (60 mL) was heated at reflux for 8 h. Cooled, diluted with EtOAc and extracted with water (2×) and washed with brine. Dried over Na₂SO₄ and stirred for 1 h with (3-mercaptopropyl) silica gel. Filtered and concentrated under vacuum to afford a yellow solid. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave a yellow solid. Triturated with cold hexanes, filtered and dried under vacuum to give the title compound as a fine nearly white solid (1.99 g, 65%). A second crop of crystals (140 mg) was obtained from the mother liquors, bringing the yield to 70%.

Part B. Preparation of 1-(3-tert-butyl-4-methoxy-5-(1-oxo-2,3-dihydro-1H-inden-5-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

In a microwave tube, a suspension of the product from Example 2B, Part E (130 mg, 0.33 mmol), the product from Part A (101 mg, 0.39 mmol), and 1.0M sodium carbonate solution (390 μL, 0.39 mmol) in 1:1 ethanol-toluene (1.20 mL) was degassed by nitrogen sparge for 15 min. The mixture was treated with 1,1′-bis(diphenylphosphino)ferrocene palladium (II) chloride dichloromethane complex (13 mg, 0.016 mmol) and degassing was continued for another 5 min and heated at 100° C. in the microwave for 1 h. Cooled, diluted with EtOAc and extracted with 1M citric acid solution and brine. The organic layer was then stirred with (3-mercaptopropyl) silica gel for 1 h. Filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with EtOAc/hexanes gave the title compound as a white solid (80 mg, 61%).

Part C. Preparation of (E)-N′-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide

A suspension of the product from Part B (77 mg, 0.19 mmol) and methanesulfonylhydrazide (22 mg, 0.20 mmol) in 3:1 THF:MeOH (1.9 mL) was warmed at 60° C. for 24 h. The mixture was concentrated under vacuum and the residue was purified by silica gel column chromatography eluting with EtOAc/hexanes to give the title compound as a white solid (62 mg, 66%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.40 (d, J=1.84 Hz, 1H) 9.94 (s, 1H) 7.76 (dd, J=13.97, 8.09 Hz, 2H) 7.52-7.59 (m, 1H) 7.51 (d, J=8.46 Hz, 1H) 7.11-7.40 (m, 2H) 3.28 (s, 3H) 2.96-3.19 (m, 5H), 2.85 (m, 2H), 1.40 (s, 9H). MS (+ESI) m/z (rel abundance): 497 (100, M+H), 1015 (5, 2M+Na).

Example 5 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]oxazol-5-yl)methanesulfonamide (compound IB-L0-2.6)

Part A. Preparation of methyl 3-tert-butyl-2-hydroxy-5-nitrobenzoate

Methyl 3,5-di-tert-butyl-2-hydroxybenzoate (28.66 g, 108.4 mmol) was dissolved with stirring in 430 mL glacial acetic acid and the resulting mixture was treated drop wise with fuming nitric acid (90%, 179.26 mL). When the addition was complete, the resulting mixture was stirred for 2.5 h. The reaction mixture was poured into a 2.0 L of crushed ice and allowed to stand 30 min. Afterwards, 1.0 L of water was added and the ice water mixture was allowed to melt. The mixture was then filtered, washed with water and dried to provide the title compound (24.57 g, 89%).

Part B. Preparation of methyl 3-tert-butyl-2-methoxy-5-nitrobenzoate

Methyl 3-tert-butyl-2-hydroxy-5-nitrobenzoate (11.41 g, 45.0 mmol), potassium carbonate (9.34 g, 67.6 mmol), acetone (200 mL), and dimethyl sulfate (6.46 g, 67.6 mmol) were added together. The resultant mixture was then heated to reflux for 16 h. The mixture was then filtered and the solid was washed with ethyl acetate. The resulting organic liquid was then concentrated under vacuum to an oil and redissolved in ethyl acetate (600 mL). The organic solution was then washed with water, dried, filtered and concentrated under vacuum to an oil that was then subjected to purification via column chromatography (gradient of 5% to 40% EtOAc/Hexanes) to yield the title compound as an oil (10.42, 87%).

Part C. Preparation of methyl 5-amino-3-tert-butyl-2-methoxybenzoate

Methyl 3-tert-butyl-2-methoxy-5-nitrobenzoate (10.42 g, 39.0 mmol), iron powder (325 mesh, 10.89 g, 195 mmol), ammonium chloride (3.13 g, 58.5 mmol), water (30 mL), and methanol (150 mL) were added together. The resultant mixture was then refluxed for 1 h. The mixture was then cooled to room temperature, filtered through celite, and the celite washed with methanol. The filtrate was then concentrated under vacuum and dissolved in ethyl acetate (600 mL). The resultant solution was then washed with water and brine. The organic extract was then dried, filtered and concentrated under vacuum to yield the title compound as an oil (9.25 g, 100%).

Part D. Preparation of (E)-methyl 3-tert-butyl-2-methoxy-5-(3-(3-methoxyacryloyl)ureido)benzoate

The product obtained as described in Part C (2.0 g, 8.43 mmol) was dissolved in 30 mL of N,N-dimethylacetamide and cooled to −25° C. A 0.5 Molar solution of E-3-methoxyacryloyl isocyanate in benzene (21.9 mL, 10.96 mmol) was added drop wise and the resulting solution was stirred at ambient temperature for 4 h, and then poured into water. The product was extracted into dichloromethane, washed with brine, dried over sodium sulfate, filtered and evaporated under vacuum to give 100% yield.

Part E. Preparation of methyl 3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxybenzoate

The product from Part D (3.1 g, 8.51 mmol) was dissolved in ethanol (60 mL). Sulfuric acid (6 mL) was added to water (60 mL) then this solution was added in one portion to the ethanol. The heterogeneous mixture was heated at 100° C. for 3 h. The ethanol was removed under vacuum, and then the aqueous solution was extracted with dichloromethane and evaporated to dryness. This residue was purified by flash chromatography, eluting with 1% methanol/dichloromethane to yield 1.23 g (44%).

Part F. Preparation of 3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxybenzoic acid

The product from Part E (1.23 g, 3.7 mmol) was taken up in ethanol (5 mL) and 1 Molar sodium hydroxide solution (10 mL) and stirred at ambient temperature for 18 h. The solution was diluted with 1M HCl and the resulting solid was filtered and dried to give 0.945 g (80%).

Part G. Preparation of 3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy benzaldehyde

The product from Part F (0.945 g, 2.97 mmol) was taken up in thionyl chloride (4.5 mL) and the mixture was heated at 80° C. for 40 min. After evaporation to dryness, the acid chloride was dissolved in dry THF (8 mL) and cooled to −78° C. A 1 Molar solution of lithium tri-tert-butoxyaluminum hydride in THF (3.0 mL, 3.0 mmol) was added drop wise. After 45 min the cold reaction was quenched with 1M HCl (5 mL), extracted into ethyl acetate, and purified by flash column, eluting with dichloromethane followed by 1% methanol/dichloromethane to give 0.635 g (71%).

Part H. Preparation of 1-(3-tert-butyl-4-methoxy-5-(5-nitrobenzo[d]oxazol-2-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

The product from Part G (400 mg, 1.323 mmol), 2-amino-4-nitrophenol (204 mg, 1.323 mmol), Charcoal (Darco KB, 191 mg, 15.88 mmol) and toluene (50 mL) were added to a flask and the mixture was heated to 120° C., and stirred open to the air for 48 h. Filtered through Celite and concentrated under vacuum. Purification by silica gel column chromatography eluting with CH₂Cl₂/MeOH gave the title compound (300 mg, 52%).

Part I. Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]oxazol-5-yl)methanesulfonamide

To the product from Part H (300 mg, 0.687 mmol), iron (192 mg, 3.44 mmol), and ammonium chloride (55 mg, 1.031 mmol) was added to a mixture of THF (15 mL), EtOH (15 mL) and water (4.5 mL). The resultant solution was heated to 90° C. for 45 min, and cooled. Filtered through Celit, washed with ethanol, and concentrated under vacuum. The solid was dissolved in ethyl acetate, and washed with water. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with CH₂Cl₂/MeOH provided the aniline. The solid (75 mg, 0.185 mmol) was dissolved in CH₂Cl₂ (5 mL), and pyridine (0.045 mL, 0.554 mmol) and methanesulfonyl chloride (0.025 mL, 0.323 mmol) were added and stirred at room temperature for 16 h. CH₂Cl₂ was added followed by washing with a 1N HCl. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with CH₂Cl₂/MeOH provided the title compound as a solid (9.8 mg, 3%, two steps). 1H NMR (300 MHz, DMSO-d6): δ 11.46 (s, 1H), 9.85 (s, 1H), 7.91 (d, J=2.2 Hz, 1H), 7.81 (dd, J=9.9, 8.8 Hz, 2H), 7.68 (d, J=2.2 Hz, 1H), 7.56 (d, J=2.6 Hz, 1H), 7.33 (dd, J=8.8, 1.8 Hz, 1H), 5.68 (d, J=7.7 Hz, 1H), 3.64 (s, 3H), 3.00 (s, 3H), 1.42 (s, 9H). MS: m/z 485 (M+H)+.

Example 6 Preparation of 1-(3-tert-butyl-4-methoxy-5-(6-nitrobenzo[d]oxazol-2-yl)phenyl)dihydropyrimidine-2,4(1H,3H)-dione (compound IA-L0-2.6)

Part A. Preparation of 3-(3-tert-butyl-4-methoxy-5-(methoxycarbonyl)phenylamino) propanoic acid

The product from Example 5, Part C (16.44 g, 69.3 mmol) was dissolved in toluene (200 mL). This mixture was heated to reflux and acrylic acid added over time (1 mL of acrylic acid added every 3 h, 5.23 mL total, 76.2 mmol). The mixture was then refluxed for 24 h. The mixture was then cooled and concentrated under vacuum to dryness to yield an oil as the crude title compound that was used directly in the next reaction.

Part B. Preparation of methyl 3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxybenzoate

The product from Part A (21.43 g, 69.3 mmol), urea (10.4 g, 173 mmol) and acetic acid (glacial, 200 mL) were added together. The mixture was then heated to 120° C. for 18.5 h followed by concentration under vacuum to dryness to an oil. To this oil was added methanol (13 mL), and ethyl acetate (350 mL). The resultant mixture was allowed to stand for 24-48 h whereby a precipitate formed. The resulting solid was filtered off and washed with a small amount of methanol (10 mL) and then air dried to yield the title compound as a solid (15.26 g, 66%).

Part C. Preparation of 3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxy benzoic acid

The product from Part B (4.52 g, 13.52 mmol), methanol (70 mL), and tetrahydrofuran (70 mL) were added together. The mixture was then stirred vigorously until a homogenous solution resulted. Once homogenous, a solution of aqueous sodium hydroxide (1.0M, 68 mL) was added. The mixture was then stirred for 12 h, the mixture was then concentrated under vacuum to remove the organic solvent, followed by the addition of aqueous hydrochloric acid (1.0M, 80 mL) that resulted in solid formation. The mixture was then concentrated under vacuum. To this material was added hydrochloric acid (12M, 100 mL) and the resultant material heated to 100° C. for 1.5 h. The reaction was then cooled and water added. The resulting solid was filtered, washed with water, and dried to yield the title compound as a solid (3.55 g, 82%).

Part D. Preparation of 3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxy benzaldehyde

The product obtained in Part C (4.07 g, 12.71 mmol) and thionyl chloride (40.82 mL, 559 mmol) were combined and the mixture was refluxed for 2 h, followed by concentration under vacuum to provide a light yellow colored solid product. The solid was dissolved in tetrahydrofuran (125 mL), the solution cooled to −78° C. and LiAl(OtBu)₃ (1M, 14 mL) was added slowly over 10 min while maintaining the temperature at −78° C. The mixture was stirred at 78° C. for 2 h. The reaction was quenched with hydrochloric acid (aq., 1M, 25 mL) at −78° C. The mixture was warmed to room temperature and ethyl acetate was added. The layers were separated and the aqueous layer was washed with ethyl acetate. The organic extracts were combined and washed with half saturated sodium bicarbonate solution. The organic layer was dried, filtered and concentrated under vacuum to yield a solid as the title compound (3.73 g, 96%).

Part E. Preparation of 1-(3-tert-butyl-4-methoxy-5-(6-nitrobenzo[d]oxazol-2-yl)phenyl)dihydro pyrimidine-2,4(1H,3H)-dione

A mixture of the product from Part D (75 mg, 0.246 mmol), 2-amino-5-nitrophenol (38 mg, 0.0246 mmol) and Darco KB charcoal (excess) was refluxed in toluene (10 mL) for 24 h under exposure to atmospheric of oxygen. Cooled, filtered and purified by reverse phase HPLC chromatography eluting with a 40-100% gradient of acetonitrile in water (0.1% TFA) to provide the title compound as a solid (96 mg, 64%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.42 (s, 9H) 2.74 (t, J=6.80 Hz, 2H) 3.66 (s, 3H) 3.82-3.88 (m, 2H) 7.56 (d, J=2.57 Hz, 1H) 7.91 (d, J=2.57 Hz, 1H) 8.09 (d, J=8.82 Hz, 1H) 8.37 (dd, J=8.82, 2.21 Hz, 1H) 8.84 (d, J=2.21 Hz, 1H) 10.44 (s, 1H). MS ESI+ (439) (M+H)+.

Example 7 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]oxazol-6-yl)methanesulfonamide (compound IA-L0-2.5)

The product from Example 6 (96 mg. 0.219 mmol) was reacted a iron (0.614 g, 1.10 mmol), and ammonium chloride (0.176 g, 0.329 mmol) in the presence of a mixture of tetrahydrofuran (5 mL), ethanol (5 mL) and water (3 mL). The slurry was heated to 90° C. for 45 min, cooled to ambient temperature. Filtered through a pad of celite (10 g), washed with ethanol (20 mL), and the filtrate was concentrated under vacuum to a solid. The resulting solid was dissolved in ethyl acetate and washed with water. Dried over Na₂SO₄, filtered and concentrated under vacuum to a yellow solid, providing the corresponding aniline. The solid was dissolved in dichloromethane (10 mL), pyridine (0.670 mL, 0.657 mmol) and methanesulfonyl chloride (0.221 mL, 0.329 mmol) were added and the solution stirred at room temperature 16 h. CH₂Cl₂ was added followed by washing with a 1N aq. HCl solution. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with 98:2 CH₂Cl₂:MeOH gave the title compound as a solid (25 mg, 21%, two steps). ¹H NMR (300 MHz, DMSO-d₆): δ 1.41 (s, 9H) 2.73 (t, J=6.62 Hz, 2H) 3.06 (s, 3H) 3.61 (s, 3H) 3.83 (t, J=6.62 Hz, 2H) 7.28 (dd, J=8.46, 1.84 Hz, 1H) 7.48 (d, J=2.57 Hz, 1H) 7.65 (d, J=1.84 Hz, 1H) 7.80 (d, J=1.47 Hz, 1H) 7.82 (d, J=4.04 Hz, 1H) 10.03 (s, 1H) 10.41 (s, 1H). MS ESI+ (487) (M+H)+.

Example 8 Preparation of 1-(3-tert-butyl-4-methoxy-5-(5-nitrobenzo[d]oxazol-2-yl)phenyl)dihydropyrimidine-2,4(1H,3H)-dione (compound IA-L0-2.7)

The product from Example 6, Part D (150 mg, 0.493 mmol) was reacted with 2-amino-4-nitrophenol (76 mg, 0.493 mmol) according to the procedures from Example 6, Part E to provide the title compound as a solid (70 mg, 32%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.42 (s, 9H) 2.74 (t, J=6.80 Hz, 2H) 3.65 (s, 3H) 3.85 (t, J=6.62 Hz, 2H) 7.55 (d, J=2.57 Hz, 1H) 7.89 (d, J=2.94 Hz, 1H) 8.12 (d, J=8.82 Hz, 1H) 8.40 (dd, J=9.01, 2.39 Hz, 1H) 8.76 (d, J=2.21 Hz, 1H) 10.43 (s, 1H). MS ESI+(439) (M+H)+.

Example 9 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]oxazol-5-yl)methanesulfonamide (compound IA-L0-2.8)

The product from Example 8 (65 mg, 0.148 mmol) was reacted according to the procedures from Example 7 to provide the title compound as a solid (42 mg, 44%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.41 (s, 9H) 2.73 (t, J=6.43 Hz, 2H) 3.01 (s, 3H) 3.60 (s, 3H) 3.83 (t, J=6.43 Hz, 2H) 7.31 (dd, J=8.64, 2.02 Hz, 1H) 7.49 (d, J=2.94 Hz, 1H) 7.56 (d, J=2.21 Hz, 1H) 7.67 (d, J=2.21 Hz, 1H) 7.81 (s, 1H) 9.82 (s, 1H) 10.41 (s, 1H). MS ESI+ (487) (M+H)+.

Example 10 Preparation of 1-(3-(benzo[d]thiazol-2-yl)-5-tert-butyl-4-methoxyphenyl)dihydro pyrimidine-2,4(1H,3H)-dione (compound IA-L0-2.3)

The product from Example 6, Part D (75 mg, 0.246 mmol) was reacted with 2-aminobenzene thiol (0.026 mL, 0.246 mmol) according to the procedures from Example 6, Part E to provide the title compound as a solid (25 mg, 25%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.44 (s, 9H) 2.73 (t, J=6.43 Hz, 2H) 3.62 (s, 3H) 3.84 (t, J=6.62 Hz, 2H) 7.46 (d, J=2.57 Hz, 1H) 7.48-7.60 (m, 2H) 7.86 (d, J=2.57 Hz, 1H) 8.13 (dd, J=17.28, 7.72 Hz, 2H) 10.40 (s, 1H). MS ESI+ (410) (M+H)+.

Example 11 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-benzo[d]imidazol-5-yl)methanesulfonamide (compound IA-L0-2.1)

Part A. Preparation of N-(3,4-dinitrophenyl)methanesulfonamide

A mixture of 3,4-dinitroaniline (5.27 g, 28.8 mmol), methanesulfonyl chloride (3.36 mL, 43.1 mmol) and pyridine (5.82 mL, 71.9 mmol) in CH₂Cl₂ (100 mL) was stirred for 24 h. Mixture was concentrated under vacuum to provide a crude semi-solid title compound that was used without further purification.

Part B. Preparation of N-(3,4-diaminophenyl)methanesulfonamide

The product from Part A (7.51 g, 28.8 mmol) was reacted with iron (16 g, 288 mmol) and NH₄Cl (3.84 g, 71.9 mmol) in refluxing CH₃OH (100 mL) and water (20 mL) for 2 h. Filtered through celite and concentrated under vacuum. Purification by silica gel column chromatography eluting with MeOH/CH₂Cl₂ provided the title compound as a dark semi-solid (0.5 g, 8%).

Part C. Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxy phenyl)-1H-benzo[d]imidazol-5-yl)methanesulfonamide

A mixture of the product from Example 6, Part D (200 mg, 0.657 mmol) was reacted with the product from Part B (132 mg, 0.657 mmol) according to the procedures from Example 6, Part E to provide the title compound as a solid (112 mg, 34%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.43 (s, 9H) 2.72 (t, J=6.62 Hz, 2H) 2.93 (s, 3H) 3.44 (s, 3H) 3.82 (t, J=6.43 Hz, 2H) 7.07-7.14 (m, 1H) 7.38 (d, J=2.57 Hz, 1H) 7.48-7.64 (m, 2H) 7.72 (d, J=2.57 Hz, 1H) 9.57 (s, 1H) 10.38 (s, 1H) 12.55 (s, 1H). MS ESI+ (486) (M+H)+.

Example 12 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]thiazol-6-yl)methanesulfonamide (compound IA-L0-2.2)

Part A. Preparation of N-(3-chloro-4-nitrophenyl)methanesulfonamide

A mixture of 3-chloro-4-nitroaniline (4.85 g, 28.1 mmol), methanesulfonyl chloride (3.29 mL, 42.2 mmol) and pyridine (6.82 mL, 84 mmol) in THF (100 mL) was stirred for 24 h. Poured in 1M HCl (500 mL). The resulting precipitate was filtered and air-dried to provide the title compound as a solid (7.03 g, 100%).

Part B. Preparation of N-(3-(4-methoxybenzylthio)-4-nitrophenyl)methanesulfonamide

A mixture of the product from Part A (7.0 g, 27.9 mmol), (4-methoxyphenyl)methanethiol (3.89 mL, 27.9 mmol) and K₂CO₃ (11.58 g, 84 mmol) in DMF was heated at 100° C. for 12 h. Cooled and poured into 1M HCl (800 mL). The resulting precipitate was filtered and air-dried to provide the title compound as a yellow solid (6.98 g, 68%).

Part C. Preparation of N-(4-amino-3-(4-methoxybenzylthio)phenyl)methanesulfonamide

The product from Part B (6.98 g, 19.0 mmol) was reacted according to the procedures from Example 11, Part B to provide the title compound as a yellow semi-solid (4.44 g, 69%).

Part D. Preparation of N,N′-(3,3′-disulfanediylbis(4-amino-3,1-phenylene))dimethanesulfonamide

The product from Part C (708 mg, 2.09 mmol) was reacted with mercuric (II) acetate (667 mg, 2.09 mmol), anisole (0.457 mL, 4.18 mmol) and TFA (10 mL) at 0° C. for 45 min. Concentrated under vacuum and dissolved in MeOH. Hydrogen sulfide gas was bubbled into solution for 1 h followed by filtration and concentration under vacuum. Purification by silica gel chromatography eluting with EtOAc/hexane gave the title compound as a yellowish solid (340 mg, 75%).

Part E. Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]thiazol-6-yl)methanesulfonamide

The product from Part D (100 mg, 0.23 mmol) was reacted with the product from Example 6, Part D (140 mg, 0.46 mmol), triphenylphosphine (60.4 mg, 0.23 mmol) and 4-methylbenzene-sulfonic acid (0.0054 mL, 0.046 mmol) in refluxing toluene for 3 h. Concentrated under vacuum and purified by reverse phase HPLC chromatography eluting a 40-100% gradient of acetonitrile in water (0.1% TFA) to give the title compound as a solid (99 mg, 43%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.43 (s, 9H) 2.73 (t, J=6.62 Hz, 2H) 3.07 (s, 3H) 3.63 (s, 3H) 3.83 (t, J=6.62 Hz, 2H) 7.39 (dd, J=8.82, 2.21 Hz, 1H) 7.45 (d, J=2.57 Hz, 1H) 7.83 (d, J=2.57 Hz, 1H) 7.95 (d, J=2.21 Hz, 1H) 8.05 (d, J=8.82 Hz, 1H) 10.03 (s, 1H) 10.39 (s, 1H). MS ESI+ (503) (M+H)+.

Example 13 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]thiazol-5-yl)methanesulfonamide (compound IA-L0-2.4)

Part A. Preparation of N-(4-chloro-3-nitrophenyl)methanesulfonamide

A mixture of 4-chloro-3-nitroaniline (5.0 g, 29 mmol), methanesulfonyl chloride (2.37 mL, 30.4 mmol) and pyridine (5.9 mL, 72.4 mmol) in THF (100 mL) was stirred for 24 h. Poured in 1M HCl (500 mL). The resulting precipitate was filtered and air-dried to provide the title compound as a solid (6.7 g, 92%).

Part B. Preparation of N-(4-(4-methoxybenzylthio)-3-nitrophenyl)methanesulfonamide

A mixture of the product from Part A (3.0 g, 12 mmol), (4-methoxyphenyl)methanethiol (1.67 mL, 12 mmol) and K₂CO₃ (4.96 g, 36 mmol) in DMF was heated at 100° C. for 12 h. Cooled and poured into 1M HCl (800 mL). The resulting precipitate was filtered and air-dried to provide the title compound as a yellow solid (1.95 g, 44.2%).

Part C. Preparation of N-(3-amino-4-(4-methoxybenzylthio)phenyl)methanesulfonamide

The product from Part B (1.43 g, 3.88 mmol) was reacted according to the procedures from Example 11, Part B to provide the title compound as a white solid (1.31 g, 100%).

Part D. Preparation of N,N′-(4,4′-disulfanediylbis(3-amino-4,1-phenylene))dimethanesulfonamide

The product from Part C (75 mg, 0.222 mmol) was reacted with mercuric (II) acetate (70.6 mg, 0.222 mmol), anisole (0.048 mL, 0.443 mmol) and TFA (10 mL) at 0° C. for 45 min. Concentrated under vacuum and dissolved in MeOH. Hydrogen sulfide gas was bubbled into solution for 1 h followed by filtration and concentration under vacuum. Purification by silica gel column chromatography eluting with EtOAc/Hexane gave the title compound as a yellowish solid (34 mg, 71%).

Part E. Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxy phenyl)benzo[d]thiazol-5-yl)methanesulfonamide

The product from Part D (50 mg, 0.115 mmol) was reacted with the product from Example 6, Part D (70 mg, 0.230 mmol), triphenylphosphine (30.2 mg, 0.115 mmol) and 4-methylbenzenesulfonic acid (0.00267 mL, 0.023 mmol) in refluxing toluene for 3 h. Concentrated under vacuum and purified by reverse phase HPLC chromatography eluting with a 40-100% gradient of acetonitrile in water (0.1% TFA) to give the title compound as a solid (40 mg, 33%). ¹H NMR (300 MHz, DMSO-d₆): δ 1.43 (s, 9H) 2.73 (t, J=6.80 Hz, 2H) 3.05 (s, 3H) 3.63 (s, 3H) 3.84 (t, J=6.62 Hz, 2H) 7.35 (dd, J=8.64, 2.02 Hz, 1H) 7.46 (d, J=2.94 Hz, 1H) 7.86 (d, J=2.94 Hz, 1H) 7.92 (d, J=1.84 Hz, 1H) 8.10 (d, J=8.46 Hz, 1H) 9.98 (s, 1H) 10.40 (s, 1H). MS ESI+ (503) (M+H)+.

Example 14 Preparation of 1-(3-tert-butyl-4-methoxy-5-(naphthalen-2-yl)phenyl) pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.1)

Part A. Preparation of tert-butyl 3-tert-butyl-4-methoxy-5-(naphthalen-2-yl)phenyl carbamate

In a resealable Schlenk tube, a solution of the product from Example 1, Part H (200 mg, 0.56 mmol), naphthalene-2-boronic acid (144 mg, 0.84 mmol), and 1.0M sodium carbonate solution (558 μL, 0.56 mmol) in toluene (2.8 mL) was degassed by nitrogen sparge for 10 min. The mixture was treated with 1,1′-bis(diphenylphosphino)ferrocene palladium (II) chloride dichloromethane complex (14 mg, 0.017 mmol) and degassing was continued for another 5 min. The Schlenk tube was sealed and warmed at 95° C. for 18 h. Cooled and diluted with ethyl acetate and water. Treated with Darco G-60 and filtered through celite. Filtrate was extracted with water (2×) and with brine. Dried over Na₂SO₄, filtered and concentrated. Purification by silica gel column chromatography eluting with 10-75% EtOAc in hexanes gave the title compound as an oil (210 mg, 93%).

Part B. Preparation of 3-tert-butyl-4-methoxy-5-(naphthalen-2-yl)aniline

The product from Part A (210 mg, 0.52 mmol) was dissolved in 4N HCl in dioxane (4.0 mL) and stirred at room temperature for 1 h. Concentration under vacuum afforded a solid, which was suspended in ethyl acetate and stirred with saturated sodium bicarbonate solution. The organic layer was dried over Na₂SO₄, filtered and concentrated under vacuum to give the title compound, as a brown oil (111 mg, 70%).

Part C. Preparation of (E)-N-(3-tert-butyl-4-methoxy-5-(naphthalen-2-yl)phenylcarbamoyl)-3-methoxyacrylamide

A solution of the product from Part B (11 mg, 0.36 mmol) in dry DMF (2.9 mL) at −20° C. was treated with (E)-3-methoxyacryloyl isocyanate solution (0.66 mL, of 0.55M in benzene, 0.36 mmol) followed by gradual warming to room temperature. After stirring for 30 min, the mixture was cooled again to −20° C. and more (E)-3-methoxyacryloyl isocyanate solution (1.0 mL, 0.55 mmol) was added. After warming again to room temperature for 30 min, the reaction was complete. Diluted with EtOAc and extracted with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with 10-100% EtOAc in hexane gave the title compound as a light yellow-oil (144 mg, 92%).

Part D. Preparation of 1-(3-tert-butyl-4-methoxy-5-(naphthalen-2-yl)phenyl)pyrimidine-2,4(1H,3H)-dione

A suspension of the product from Part C (144 mg, 0.33 mmol) in 2:2:1 ethanol-water-THF (15 mL) was treated with 1N sulfuric acid solution (3.0 mL) followed by warming at 100° C. for 24 h. Cooled and diluted with EtOAc and extracted with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with 10-100% EtOAc in hexane gave the title compound as a white solid (62 mg, 47%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.42 (s, 1H), 8.08 (s, 1H), 7.90-8.04 (m, 3H), 7.81 (d, J=7.72 Hz, 1H), 7.72 (d, J=8.46 Hz, 1H), 7.56 (dd, J=6.25, 3.31 Hz, 2H), 7.39 (d, J=2.57 Hz, 1H), 7.33 (d, J=2.57 Hz, 1H), 5.65 (d, J=7.72 Hz, 1H), 3.24 (s, 3H), 1.43 (s, 9H). MS+ESI m/z (rel abundance): 401 (100, M+H), 418 (30, M+NH4).

Example 15 Preparation of 1-(3-tert-butyl-4-methoxy-5-(6-methoxynaphthalen-2-yl)phenyl) pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.2)

Part A. Preparation of tert-butyl 3-tert-butyl-4-methoxy-5-(6-methoxynaphthalen-2-yl)phenyl carbamate

The product from Example 1, Part H (158 mg, 0.44 mmol) was reacted with 6-methoxynaphthalen-2-ylboronic acid (107 mg, 0.52 mmol) according to the procedures from Example 14, Part A to provide the title compound as a white solid (92 mg, 47%).

Part B. Preparation of 3-tert-butyl-4-methoxy-5-(6-methoxynaphthalen-2-yl)aniline

The product from Part A (92 mg, 0.21 mmol) was reacted according to the procedures from Example 14, Part B to provide the title compound as a pink solid (71 mg, 99%).

Part C. Preparation of (E)-N-(3-tert-butyl-4-methoxy-5-(6-methoxynaphthalen-2-yl)phenyl carbamoyl)-3-methoxyacrylamide

The product from Part B (71 mg, 0.2 mmol) was reacted according to the procedures from Example 14, Part C to provide the title compound as a buff-colored solid (58 mg, 59%).

Part D. Preparation of 1-(3-tert-butyl-4-methoxy-5-(6-methoxynaphthalen-2-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

A solution of the product from Part C (58 mg, 0.13 mmol) in 2:1:1 ethanol-THF-water (4.0 mL) was treated with 1.0M sulfuric acid solution (3.0 mL) followed by warming at 95° C. for 24 h. Cooled and diluted with EtOAc. Extracted with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with 10-100% EtOAc in hexanes gave the product as a faint pink solid (28 mg, 52%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.41 (s, 1H), 8.00 (s, 1H), 7.91 (dd, J=8.64, 4.60 Hz, 2H), 7.80 (d, J=7.72 Hz, 1H), 7.67 (d, J=8.82 Hz, 1H), 7.34-7.47 (m, 2H), 7.21-7.32 (m, 1H), 7.20 (dd, J=9.01, 2.39 Hz, 1H), 5.65 (d, J=7.72 Hz, 1H), 3.90 (s, 3H), 3.24 (s, 3H), 1.42 (s, 9H). MS+ESI m/z (rel abundance): 431 (100, M+H), 448 (45, M+NH4).

Example 16 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.8)

Part A. Preparation of 2-bromo-4-tert-butyl-6-nitroaniline

A suspension of 4-tert-butyl-2-nitroaniline (1.033 g, 5.32 mmol) in glacial acetic acid (7.8 mL) was warmed with a heat gun until all solids had dissolved. The solution was then cooled and treated portion wise with pyridinium hydrobromide perbromide (1.96 g, 6.12 mmol). After addition, the solution was stirred at room temperature for 1 h. The mixture was added to water (50 mL) and treated with a small amount of sodium sulfite. After stirring for 30 min, the precipitate was collected by filtration. The solid obtained was washed with water and dissolved in EtOAc. Washed with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum to provide the title compound as a yellow-orange solid (1.36 g, 94%).

Part B. Preparation of 1-bromo-3-tert-butyl-5-nitrobenzene

A solution of tert-butyl nitrite (300 μL of 90%, 261 mg, 2.27 mmol) in dry DMF (4 mL) was warmed at 50° C. and was treated with a solution of the product from Part A (414 mg, 1.52 mmol) in DMF (3.5 mL). After a few minutes stirring, the solution began to bubble vigorously. After warming at 50° C. for 1 h, additional (300 μL) tert-butyl nitrite was added followed by warming at 50° C. for 1 h. After 18 h at room temperature, tert-butyl nitrite (1.2 mL) was added and the mixture warmed at 50° C. for 2 h. Cooled and diluted with EtOAc. Washed with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with 5-40% ethyl acetate in hexanes gave the title compound as a light yellow oil (159 mg, 41%).

Part C. Preparation of 3-bromo-5-tert-butylaniline

A solution of the product from Part B (770 mg, 2.98 mmol) in 3:3:1 methanol-water-THF (14.9 mL) was treated with ammonium chloride (239 mg, 4.47 mmol) and iron powder (833 mg, 14.92 mmol) followed by warming at reflux for 8 h. Diluted with EtOAc and water and filtered through celite. The filtrate was extracted with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum to give the title compound as a yellow oil.

Part D. Preparation of (E)-N-(3-bromo-5-tert-butylphenylcarbamoyl)-3-methoxy acrylamide

A solution of the product from Part C (681 mg, 2.99 mmol) in dry DMF (23 mL) at −30° C. was treated drop wise with a 0.4M solution of (E)-3-methoxyacryloyl isocyanate in benzene (14.9 mL, 5.96 mmol). The solution was stirred at −30° C. for 30 min followed by warming gradually to room temperature, and then stirred for 18 h. Diluted with EtOAc and washed with water and brine. Dried over Na₂SO₄, filtered and concentrated under vacuum to afford a yellow solid, which was triturated with ether-hexanes and collected by filtration. Dried under vacuum to give the title compound as a light brown powder. (951 mg, 90%).

Part E. Preparation of 1-(3-bromo-5-tert-butylphenyl)pyrimidine-2,4(1H,3H)-dione

A suspension of the product from Part D (951 mg, 2.68 mmol) in ethanol (25 mL) was treated with a solution of concentrated sulfuric acid (2.60 mL, 4.78 g, 18.22 mmol) in water (13.4 mL) followed by warming at 100° C. for 1 h. Cooled and concentrated to remove ethanol. Cooled to 0° C. and the precipitate was collected by filtration and washed with water. Dried under vacuum to give the title compound as an orange solid (619 mg, 72%).

Part F. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl) naphthalen-2-yl) methanesulfonamide

In a microwave tube, a suspension of the product from Part E (104 mg, 0.32 mmol), the product from Example 2A, Part B (134 mg, 0.39 mmol), and 1.0M sodium carbonate solution (386 μL, 0.39 mmol) in 1:1 ethanol-toluene (2.1 mL) was degassed by nitrogen sparge for 10 min. The solution was treated with 1,1′-bis(di-tert-butylphosphino)ferrocene-palladium (II) dichloride (20 mg, 0.031 mmol) and degassing was continued for another 5 min. The mixture was heated at 100° C. in the microwave for 30 min. Diluted with EtOAc and washed with water and brine. Dried over Na₂SO₄ and treated with (3-mercapto propyl) silica gel for 30 min. Filtered and concentrated under vacuum to afford an amber solid, which was triturated with ether-hexanes. Collected the solid by filtration and dried under vacuum to provide the title compound (81 mg, 54%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.46 (s, 1H) 10.05 (s, 1H), 8.25 (s, 1H) 7.98 (dd, J=11.58, 9.01 Hz, 1H) 7.86-7.93 (m, 1H) 7.78-7.85 (m, 2H) 7.72 (s, 1H) 7.67 (s, 1H) 7.31-7.51 (m, 2H) 5.70 (dd, J=7.72, 2.21 Hz, 1H) 3.08 (s, 3H) 1.39 (s, 9H).

Example 17 Preparation of (E)-N′-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide (compound IB-L0-2.7)

Part A. Preparation of 1-(3-tert-butyl-5-(1-oxo-2,3-dihydro-1H-inden-5-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

In a microwave tube, a suspension of the product from Example 16, Part E, the product from Example 4, Part A (144 mg, 0.56 mmol), 1.0M sodium carbonate solution (557 μL, 0.56 mmol) in 1:1 ethanol-toluene (3.0 mL) was degassed by nitrogen sparge for 15 min. 1,1′-Bis(di-t-butylphosphino) ferrocene palladium (II) chloride complex (15 mg, 0.023 mmol) was added and degassing was continued for an additional 5 min. The tube was sealed and the mixture was heated at 100° C. in the microwave for 30 min. Diluted with EtOAc and water. Washed with 1M citric acid solution, water, and brine. The organic was stirred with (3-mercaptopropyl) silica gel for 1 h. Dried over Na₂SO₄, filtered and concentrated under vacuum. Purification by silica gel column chromatography eluting with 10-100% EtOAc in hexanes gave the title compound as an off-white solid (86 mg, 50%).

Part B. Preparation of (E)-N′-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide

The product from Part A (80 mg, 0.21 mmol) was reacted according to the procedures from Example 4, Part C to provide the title compound as a white solid (73 mg, 73%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.44 (s, 1H) 9.92 (s, 1H) 7.64-7.98 (m, 5H) 7.57 (s, 1H) 7.45 (s, 1H) 5.68 (d, J=7.72 Hz, 1H) 3.00-3.20 (m, 5H) 2.85 (d, J=12.50 Hz, 2H) 1.36 (s, 9H). MS+ESI m/z (rel abundance): 467 (100, M+H).

Example 18 Preparation of N-(6-(3-bromo-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.69)

Part A. Preparation of 2-bromo-4,6-diiodophenol

A 1 L round-bottom flask was charged with 2-bromophenol (Aldrich, 8.65 g, 50 mmol) and methanol (100 ml) to give a colorless solution. Sodium hydroxide (2.40 g, 60.0 mmol) was added and stirred until the hydroxide pellets had dissolved. The solution was cooled in an ice water bath and sodium iodide (5.6 g, 37.4 mmol) was added followed by drop-wise addition of sodium hypochlorite (17 mL, 27.5 mmol) to give a transparent brown/red solution and gradual precipitation of a thick, white solid. The addition of sodium iodide and bleach was repeated 3 times to give an orange mixture that was stirred for 2 h, treated with a solution of sodium thiosulfate in water (20 g in 100 mL), stirred for 15 min and treated drop-wise with concentrated HCl to a constant pH of 1. The mixture was stirred for 15 min and filtered to collect a white solid that was washed repeatedly with water and dried to constant mass (14.7 g, 69%).

Part B. Preparation of 1-bromo-3,5-diiodo-2-methoxybenzene

A 500 mL round-bottom flask was charged with the product from Part A (14.7 g, 34.6 mmol), iodomethane (2.70 ml, 43.3 mmol), and sodium hydroxide (2.101 ml, 39.8 mmol) in acetone (96 ml) to give a tan solution. The mixture was stirred for 24 h and concentrated. The residue was dissolved in ethyl acetate, washed with water and saturated sodium chloride, dried over sodium sulfate, filtered and concentrated to give a white solid. The solid was recrystallized from hot hexane to give a white solid that was collected by filtration (12.3 g, 81%).

Part C. Preparation of 1-(3-bromo-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

A 250 mL round-bottom flask was charged with the product from Part B (8.09 g, 18.44 mmol), pyrimidine-2,4(1H,3H)-dione (2.273 g, 20.28 mmol), N-(2-cyanophenyl)picolinamide (0.823 g, 3.69 mmol), copper (I) iodide (0.351 g, 1.844 mmol) and potassium phosphate (8.22 g, 38.7 mmol) in DMSO (70 ml). The mixture was sealed, sparged with nitrogen for 15 min and heated at 60° C. for 16 h. The mixture was partitioned with ethyl acetate and water. The organic layer was washed with 1M HCl, water, brine, dried with sodium sulfate, and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel (Aldrich catalog #538086), filtered through celite and evaporated to give an off-white solid (3.92 g, 50%).

Part D. Preparation of N-(6-(3-bromo-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

To a 5 mL microwave tube was added the product from Part C (212 mg, 0.50 mmol), the product from Example 2A, Part B (174 mg, 0.50 mmol), potassium phosphate (223 mg, 1.05 mmol), PA-Ph (CAS 97739-46-3, 4.38 mg, 0.015 mmol) and tris(dibenzylideneacetone)dipalladium(0) (4.58 mg, 5.00 μmol) in tetrahydrofuran (3.0 ml) and water (1.0 ml). The tube was sealed and the mixture was sparged with nitrogen for 5 min and then stirred for 24 h. The reaction mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel (Aldrich catalog #538086), filtered through celite and evaporated. The residue was triturated with methanol/CH₂Cl₂ to give the title compound as a white solid (256 mg, 51%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.08 (s, 3H) 3.43 (s, 3H) 5.68 (d, J=8.09 Hz, 1H) 7.43 (dd, J=8.82, 2.21 Hz, 1H) 7.60 (d, J=2.57 Hz, 1H) 7.72 (m, 2H) 7.82 (d, J=3.31 Hz, 1H) 7.84 (d, J=1.84 Hz, 1H) 7.96 (m, 2H) 8.09 (s, 1H) 10.07 (s, 1H) 11.49 (s, 1H). MS (ESI−) m/z 513.9, 515.9 (M−H)⁺.

Example 19 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(5-methylfuran-2-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.58)

To a 5 mL microwave tube was added the product of Example 18 (52 mg, 0.101 mmol), 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane (0.025 ml, 0.121 mmol), 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (3.28 mg, 5.04 μmol) and potassium phosphate (42.8 mg, 0.201 mmol) in THF (3.0 ml) and water (1.0 ml). The tube was sealed and the mixture was sparged with nitrogen for 5 min and then heated at 50° C. for 3 h. The cooled mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and concentrated. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was purified by reverse phase chromatography to give the desired product as a white solid (23 mg, 44%, m.p. 174-178° C.) ¹H NMR (300 MHz, DMSO-D6) δ ppm 2.38 (s, 3H) 3.09 (s, 3H) 3.33 (s, 3H) 5.69 (dd, J=7.72, 2.21 Hz, 1H) 6.30 (d, J=3.31 Hz, 1H) 7.00 (d, J=3.31 Hz, 1H) 7.43 (m, 2H) 7.74 (d, J=2.57 Hz, 2H) 7.78 (dd, J=8.46, 1.84 Hz, 1H) 7.85 (d, J=8.09 Hz, 1H) 7.97 (t, J=8.82 Hz, 2H) 8.12 (s, 1H) 10.05 (s, 1H) 11.46 (d, J=2.21 Hz, 1H). MS (ESI+) m/z 518 (M+H)⁺.

Example 20 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(thiophen-3-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.53)

The title compound was prepared according to the procedure of Example 19 substituting thiophen-3-ylboronic acid for 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane to give a white solid (12 mg, 23%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.07 (s, 3H) 3.22 (s, 3H) 5.69 (d, J=7.72 Hz, 1H) 7.41 (dd, J=8.64, 2.02 Hz, 1H) 7.50 (d, J=2.94 Hz, 1H) 7.59 (dd, J=5.13, 1.08 Hz, 1H) 7.69 (m, 3H) 7.76 (dd, J=8.64, 1.65 Hz, 1H) 7.89 (d, J=7.72 Hz, 1H) 7.95 (m, 3H) 8.09 (s, 1H) 10.05 (s, 1H) 11.47 (s, 1H). MS (ESI+) m/z 520 (M+H)⁺.

Example 21 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(thiophen-2-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.61)

The title compound was prepared according to the procedure of Example 19 substituting thiophen-2-ylboronic acid for 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane to give a white solid (8 mg, 15%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.08 (s, 3H) 3.30 (s, 3H) 5.70 (d, J=8.09 Hz, 1H) 7.19 (dd, J=5.33, 3.86 Hz, 1H) 7.42 (dd, J=8.82, 2.21 Hz, 1H) 7.49 (d, J=2.57 Hz, 1H) 7.69 (dd, J=5.15, 1.20 Hz, 1H) 7.80 (m, 3H) 7.88 (d, J=7.72 Hz, 1H) 7.92 (d, J=2.57 Hz, 1H) 7.98 (m, 2H) 8.12 (s, 1H) 10.06 (s, 1H) 11.48 (s, 1H). MS (ESI+) m/z 520 (M+H)⁺.

Example 22 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(furan-2-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.59)

The title compound was prepared according to the procedure of Example 19 substituting furan-2-ylboronic acid for 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane to give a white solid (16 mg, 32%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.09 (s, 3H) 3.35 (s, 3H) 5.69 (d, J=7.72 Hz, 1H) 6.69 (dd, J=3.31, 1.84 Hz, 1H) 7.11 (d, J=3.31 Hz, 1H) 7.43 (dd, J=8.82, 2.21 Hz, 1H) 7.49 (d, J=2.94 Hz, 1H) 7.80 (m, 5H) 7.96 (m, 2H) 8.13 (s, 1H) 10.06 (s, 1H) 11.47 (s, 1H). MS (ESI−) m/z 502.1 (M−H)⁺.

Example 23 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(furan-3-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.64)

The title compound was prepared according to the procedure of Example 19 substituting furan-3-ylboronic acid for 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane to give a white solid (6 mg, 12%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.09 (s, 3H) 3.30 (s, 3H) 5.69 (dd, J=7.71, 1.83 Hz, 1H) 7.10 (dd, J=1.74, 0.78 Hz, 1H) 7.42 (dd, J=8.82, 2.21 Hz, 1H) 7.46 (d, J=2.57 Hz, 1H) 7.73 (d, J=2.21 Hz, 1H) 7.76 (d, J=2.57 Hz, 1H) 7.78 (d, J=1.84 Hz, 1H) 7.81 (t, J=1.84 Hz, 1H) 7.86 (d, J=7.72 Hz, 1H) 7.96 (t, J=8.82 Hz, 2H) 8.10 (s, 1H) 8.28 (s, 1H) 10.05 (s, 1H) 11.48 (s, 1H). MS (ESI−) m/z 502.1 (M−H)⁺.

Example 24 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxybiphenyl-3-yl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.71)

The title compound was prepared according to the procedure of Example 19 substituting phenylboronic acid for 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane. The crude product was purified by silica gel chromatography eluting with 3% methanol/CH₂Cl₂ to give a white solid (10 mg, 8%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.08 (s, 3H) 3.12 (s, 3H) 5.69 (dd, J=7.81, 1.47 Hz, 1H) 7.36 (m, 5H) 7.56 (d, J=2.57 Hz, 1H) 7.64 (m, 2H) 7.74 (d, J=2.21 Hz, 1H) 7.78 (dd, J=8.46, 1.84 Hz, 1H) 7.94 (m, 3H) 8.11 (s, 1H) 10.04 (s, 1H) 11.47 (s, 1H). MS (ESI−) m/z 512 (M−H)⁺.

Example 25 Preparation of N-(6-(3′-chloro-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxybiphenyl-3-yl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.74)

The title compound was prepared according to the procedure of Example 19 substituting 3-chlorophenylboronic acid for 4,4,5,5-tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane to give a white solid (38 mg, 68%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.09 (s, 3H) 3.13 (s, 3H) 5.70 (dd, J=8.09, 2.21 Hz, 1H) 7.43 (dd, J=8.82, 2.21 Hz, 1H) 7.52 (m, 3H) 7.62 (m, 2H) 7.72 (m, 2H) 7.79 (dd, J=8.46, 1.47 Hz, 1H) 7.95 (m, 3H) 8.12 (s, 1H) 10.05 (s, 1H) 11.47 (d, J=2.21 Hz, 1H). MS (ESI−) m/z 546 (M−H)⁺.

Example 26 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(5-methylthiophen-2-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.73)

The title compound was prepared according to the procedure of Example 19 substituting 4,4,5,5-tetramethyl-2-(5-methylthiophen-2-yl)-1,3,2-dioxaborolane for 4,4,5,5-tetramethyl-2-(5-methyl-furan-2-yl)-1,3,2-dioxaborolane to give a white solid (22 mg, 41%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 2.49 (s, 3H) 3.09 (s, 3H) 3.29 (s, 3H) 5.69 (dd, J=8.09, 2.21 Hz, 1H) 6.87 (d, J=2.57 Hz, 1H) 7.43 (m, 2H) 7.54 (d, J=3.68 Hz, 1H) 7.76 (m, 2H) 7.85 (s, 1H) 7.87 (d, J=5.15 Hz, 1H) 7.98 (t, J=9.01 Hz, 2H) 8.11 (s, 1H) 10.06 (s, 1H) 11.47 (d, J=2.21 Hz, 1H). MS (ESI+) m/z 534 (M+H)⁺.

Example 27 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(1-hydroxy-2-methylpropan-2-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.54)

Part A. Preparation of 2-(2-hydroxy-3,5-diiodophenyl)acetic acid

To a 250 mL round bottom flask was added 2-(2-hydroxyphenyl)acetic acid (Aldrich, 3.04 g, 20 mmol) in acetonitrile (50 ml) to give a colorless solution. N-iodosuccimide (9.00 g, 40.0 mmol) was added portionwise over 15 min to give a red/brown transparent solution that was stirred for 16 h. The mixture was concentrated and the resulting solid was triturated in 75 mL of water and filtered to collect an orange solid that was dried under vacuum. The crude solid was recrystallized from toluene to give a light orange powder (6.0 g, 74%).

Part B. Preparation of methyl 2-(3,5-diiodo-2-methoxyphenyl)acetate

To a 250 mL round-bottom flask was added the product from Part A (6 g, 14.85 mmol), potassium carbonate (6.16 g, 44.6 mmol), and dimethyl sulfate (4.12 g, 32.7 mmol) in acetone (49.5 ml) to give a brown suspension. Heated at reflux for 16 h, cooled, concentrated and the residue was partitioned between EtOAc and water. The EtOAc layer was washed with brine, dried (Na₂SO₄) and concentrated to a brown oil that was chromatographed on a 40 g silica cartridge eluting with 3:1 hexane/EtOAc to give a yellow oil (6.0 g, 94%).

Part C. Preparation of methyl 2-(3,5-diiodo-2-methoxyphenyl)-2-methylpropanoate

To a 100 mL round-bottom flask under nitrogen was added the product from Part B (1.728 g, 4 mmol) in anhydrous THF (20 ml) and HMPA (2 ml) to give a colorless solution. Methyl iodide (1.25 ml, 20.00 mmol) was added and the solution was cooled to −40° C. Potassium t-butoxide(12.00 ml, 12.00 mmol) was added dropwise and the mixture was stirred at −40 to −20° C. for 30 min and quenched with 1M HCl to a pH of 1. The mixture was extracted 3×40 ml with EtOAc. The extracts were combined, washed with brine, dried (Na₂SO₄) and concentrated. The crude product was flash chromatographed on a 40 g ISCO silica cartridge eluting with 9:1 hexane/EtOAc to give the bis-methylated product as a yellow oil (1.63 g, 89%).

Part D. Preparation of 2-(3,5-diiodo-2-methoxyphenyl)-2-methylpropanoic acid

A suspension of the product from Part C (2.63 g, 5.72 mmol) in MeOH (40 ml) and THF (40 ml) was treated with 4.0M sodium hydroxide (28 ml, 112 mmol) and heated at 80° C. for 48 h. The organic solvent was evaporated and the remaining aqueous solution was acidified with 1M HCl producing a solid that was collected by filtration, washed with water and dried to give the desired carboxylic acid (2.46 g, 96%).

Part E. Preparation of 2-(3,5-diiodo-2-methoxyphenyl)-2-methylpropan-1-ol

A solution of the product from Part D (1.00 g, 2.242 mmol) in THF (40 ml) was treated dropwise with borane THF complex 1.0M (20 ml, 20 mmol) and then heated at 50° C. for 24 h. The mixture was treated with methanol (20 mL), refluxed for 30 min and concentrated. The resulting residue was washed with water, brine, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica gel eluting with hexane/EtOAc (4:1) to give the desired product (810 mg, 84%).

Part F. Preparation of tert-butyl(2-(3,5-diiodo-2-methoxyphenyl)-2-methylpropoxy)-dimethylsilane

A solution of the product from Part E (432 mg, 1.000 mmol) in DMF (5 ml) was treated with tert-butyldimethylchlorosilane (301 mg, 2.000 mmol), and imidazole (204 mg, 3.00 mmol) and stirred for 2 h. The mixture was partitioned between 1M HCl and ethyl acetate. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica gel eluting with hexane/EtOAc (9:1) to give the desired product (522 mg, 96%).

Part G. Preparation of 1-(3-(1-(tert-butyldimethylsilyloxy)-2-methylpropan-2-yl)-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

To a 50 mL round-bottom flask was added the product from Part F (520 mg, 0.952 mmol), pyrimidine-2,4(1H,3H)-dione (117 mg, 1.047 mmol), N-(2-cyanophenyl)picolinamide (42.5 mg, 0.190 mmol), copper(I) iodide (18.13 mg, 0.095 mmol) and potassium phosphate (424 mg, 1.999 mmol) in DMSO (5 ml). The vessel was sealed, sparged with nitrogen and then heated at 60° C. for 24 h. The mixture was partitioned between 1M HCl and ethyl acetate. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was chromatographed on silica gel eluting with hexane/EtOAc (3:2) to give the product as a solid (285 mg, 65%).

Part H. Preparation of N-(6-(3-(1-(tert-butyldimethylsilyloxy)-2-methylpropan-2-yl)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

To a 5 mL microwave tube was added the product from Part G (50 mg, 0.094 mmol), the product from Example 2A, Part B (32.7 mg, 0.094 mmol), potassium phosphate (42.0 mg, 0.198 mmol), PA-Ph (CAS 97739-46-3) (0.827 mg, 2.83 μmol) and tris(dibenzylideneacetone)palladium(0) (0.863 mg, 0.943 μmol) in THF (3.0 ml) and water (1.0 ml). The vessel was sealed and the mixture was sparged with nitrogen for 5 min and then heated at 50° C. for 2 h. The mixture was partitioned between 1M HCl and ethyl acetate. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was chromatographed on silica gel eluting with hexane/EtOAc (3:7) to give a solid (32 mg, 54%).

Part I. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(1-hydroxy-2-methylpropan-2-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

The product from Part H (31 mg, 0.050 mmol) in THF (2.0 ml) was treated with 1M TBAF (0.3 ml, 0.3 mmol) in THF and stirred overnight. The mixture was partitioned with water and ethyl acetate. The organic layer was washed with brine three times, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica gel eluting with 2% to 8% methanol in CH₂Cl₂ to give a solid (21 mg, 83%). Melting point: 256-257° C. ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.35 (s, 6H) 3.08 (s, 3H) 3.23 (s, 3H) 3.67 (d, J=4.78 Hz, 2H) 4.72 (t, J=4.78 Hz, 1H) 5.65 (d, J=8.09 Hz, 1H) 7.36 (m, 3H) 7.74 (m, 3H) 7.98 (m, 3H) 10.04 (s, 1H) 11.41 (s, 1H). MS (ESI+) m/z 527 (M+NH4)⁺.

Example 28 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(1-methoxy-2-methylpropan-2-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.66)

Part A. Preparation of 1,5-diiodo-2-methoxy-3-(1-methoxy-2-methylpropan-2-yl)benzene

To a 25 mL round-bottom flask was added the product from Example 27, Part E. (259 mg, 0.6 mmol) and sodium hydride (28.8 mg, 1.200 mmol) in THF (5 ml). The mixture was stirred for 30 min and iodomethane (0.045 l, 0.720 mmol) was added. The mixture was stirred for 16 h and partitioned between ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated to give an oil (235 mg, 88%).

Part B. Preparation of 1-(3-iodo-4-methoxy-5-(1-methoxy-2-methylpropan-2-yl)phenyl)pyrimidine-2,4(1H,3H)-dione

In a 25 mL round-bottom flask was added the product from Part A (230 mg, 0.516 mmol), pyrimidine-2,4(1H,3H)-dione (63.6 mg, 0.567 mmol), N-(2-cyanophenyl)picolinamide (23.02 mg, 0.103 mmol), copper(I) iodide (9.82 mg, 0.052 mmol) and potassium phosphate (230 mg, 1.083 mmol) in DMSO (5 ml). The vessel was sealed, sparged with nitrogen and heated at 60° C. for 16 h. The mixture was cooled and partitioned between ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica gel eluting with 2% to 5% methanol in CH₂Cl₂ to give a solid (140 mg, 63%).

Part C. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(1-methoxy-2-methylpropan-2-yl)phenyl)naphthalen-2-yl)methanesulfonamide

In a 5 ml microwave tube was added the product from Part B (43 mg, 0.100 mmol), the product from Example 2A, Part B (34.7 mg, 0.100 mmol), potassium phosphate (44.6 mg, 0.210 mmol), PA-Ph (CAS 97739-46-3) (0.876 mg, 3.00 μmol) and tris(dibenzylideneacetone)palladium(0) (0.915 mg, 0.999 μmol) in THF (3.0 ml) and water (1.0 ml). The vessel was sealed, sparged with nitrogen for 5 min and heated at 50° C. for 2 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was triturated with methanol/CH₂Cl₂ (1:1) to give a solid (28 mg, 54%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.39 (s, 6H) 3.08 (s, 3H) 3.23 (s, 3H) 3.25 (s, 3H) 3.61 (s, 2H) 5.65 (d, J=7.72 Hz, 1H) 7.27 (d, J=2.57 Hz, 1H) 7.37 (d, J=2.57 Hz, 1H) 7.42 (dd, J=8.64, 2.02 Hz, 1H) 7.69 (dd, J=8.46, 1.84 Hz, 1H) 7.73 (d, J=2.21 Hz, 1H) 7.78 (d, J=7.72 Hz, 1H) 7.95 (t, J=8.27 Hz, 2H) 8.02 (s, 1H) 10.04 (s, 1H) 11.41 (s, 1H). MS (ESI+) m/z 541 (M+NH4)⁺.

Example 29 Preparation of methyl 2-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)phenyl)-2-methylpropanoate (compound IB-L0-2.70)

Part A. Preparation of methyl 2-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-iodo-2-methoxyphenyl)-2-methylpropanoate

To a 100 mL round-bottom flask under N₂ was added the product from Example 27, Part C (410 mg, 0.891 mmol), 1H-pyrimidine-2,4-dione (120 mg, 1.069 mmol), and potassium phosphate tribasic (397 mg, 1.872 mmol) in DMSO (5 ml) to give a colorless suspension. N-(2-cyanophenyl) picolinamide (39.8 mg, 0.178 mmol) was added and the mix was sparged with N₂ for 5 min. Copper(I) iodide (16.97 mg, 0.089 mmol) was added and the mix was sparged once again for 10 min, placed under N₂ and heated at 60° C. for 18 h. The mixture was cooled and partitioned between EtOAc and water adjusting the pH to 1 with HCl. The aqueous layer was extracted 2× with EtOAc. The organics were combined, washed with water, saturated NaHCO₃, and saturated NaCl. The organic layer was dried (Na₂SO₄), treated with 3-mercaptopropyl functionalized silica, filtered and concentrated. The crude product was purified by chromatography on an ISCO 40 g silica cartridge eluting with 3% MeOH in CH₂Cl₂ to give a white foam (269 mg, 68%).

Part B. Preparation of methyl 2-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)phenyl)-2-methylpropanoate

To a 20 mL microwave tube was added the product from Part A (0.444 g, 1.0 mmol), the product from Example 2A, Part B (0.365 g, 1.050 mmol), and potassium phosphate tribasic (0.446 g, 2.100 mmol) in 3:1 tetrahydrofuran-water (12 ml) and degassed by nitrogen sparge for 20 min. The solution was then treated with PA-Ph (CAS 97739-46-3) (8.77 mg, 0.030 mmol) and tris(dibenzylidene-acetone)palladium(0) (9.16 mg, 10.00 μmol) followed by degassing for another 5 min. The microwave tube was then sealed and warmed at 50° C. for 18 h, cooled and partitioned between EtOAc and water adjusting the pH to 1 with 1M HCl. The EtOAc layer was washed with water, saturated NaHCO₃, and saturated NaCl. The organic layer was dried over sodium sulfate, stirred for 1 h with 3-mercaptopropyl functionalized silica, filtered and concentrated. The crude product was purified by chromatography on an ISCO 12 g silica cartridge eluting with 1-3% MeOH in CH₂Cl₂ to give light tan crystals (480 mg, 98%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.52 (s, 6H) 3.08 (s, 3H) 3.14 (s, 3H) 3.64 (s, 3H) 5.67 (dd, J=8.09, 1.84 Hz, 1H) 7.37-7.48 (m, 3H) 7.65 (dd, J=8.46, 1.84 Hz, 1H) 7.73 (d, J=2.21 Hz, 1H) 7.83 (d, J=8.09 Hz, 1H) 7.96 (dd, J=8.64, 5.70 Hz, 2H) 8.01 (s, 1H) 10.05 (s, 1H) 11.45 (s, 1H). MS (ESI−) m/z 536 (M−H)⁺.

Example 30 Preparation of 2-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)phenyl)-2-methylpropanoic acid (compound IB-L0-2.77)

A mixture of the product from Example 29 (108 mg, 0.2 mmol) and sodium hydroxide (1 mL, 4.00 mmol) in methanol, THF, water (3:3:1, 10 mL) was heated at 80° C. for 18 h, cooled and carefully acidified to pH 1 with concentrated HCl resulting in the formation of a white precipitate. The solid was collected by filtration, washed with water and dried. The crude material was triturated in 1 mL of 1:1 EtOAc/MeOH, sonicated for 5 min and the solid was collected by filtration as a bright white solid (58 mg, 54% yield), mp>300° C. ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.50 (s, 6H) 3.08 (s, 3H) 3.18 (s, 3H) 5.66 (d, J=7.72 Hz, 1H) 7.34-7.45 (m, 3H) 7.67 (dd, J=8.64, 1.65 Hz, 1H) 7.73 (d, J=1.84 Hz, 1H) 7.82 (d, J=7.72 Hz, 1H) 7.96 (dd, J=9.01, 4.60 Hz, 2H) 8.02 (s, 1H) 10.04 (s, 1H) 11.43 (s, 1H) 12.15 (s, 1H). MS (ESI−) m/z 522 (M−H)⁺.

Example 31 Preparation of methyl 5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)benzoate (compound IB-L0-2.72)

Part A. Preparation of methyl 3,5-diiodo-2-methoxybenzoate

A mixture of 2-hydroxy-3,5-diiodobenzoic acid (3.9 g, 10.0 mmol) potassium carbonate (4.15 g, 30.0 mmol) and dimethyl sulfate (2.77 g, 22.0 mmol) in acetone (33 ml) was heated at reflux for 16 h, cooled and concentrated. The residue was dissolved in EtOAc and washed with water, brine, dried (Na₂SO₄), filtered and concentrated to give an off-white solid (4.2 g, quantitative yield).

Part B. Preparation of methyl 5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-iodo-2-methoxybenzoate

To a 100 mL round-bottom flask under N₂ was added the product from Part A (2.09 g, 5.0 mmol), 1H-pyrimidine-2,4-dione (0.67 g, 6.0 mmol), and potassium phosphate tribasic (2.2 g, 10.5 mmol) in DMSO (20 ml) to give a colorless suspension. N-(2-cyanophenyl)picolinamide (220 mg, 1.0 mmol) was added and the mix was sparged with N₂ for 5 min. Copper(I) iodide (95 mg, 0.5 mmol) was added and the mix was sparged once again for 10 min, placed under N₂ and heated at 60° C. for 18 h. The mixture was cooled and partitioned between EtOAc and water adjusting the pH to 1 with HCl. The aqueous layer was extracted 2× with EtOAc. The organics were combined, washed with water, saturated NaHCO₃, and saturated NaCl. The organic layer was dried (Na₂SO₄), treated with 3-mercaptopropyl functionalized silica, filtered and concentrated. The crude product was purified by chromatography on an ISCO 40 g silica cartridge eluting with 3% MeOH in CH₂Cl₂ to give a white foam (1.0 g, 50%).

Part C. Preparation of methyl 5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)benzoate

A mixture of the product from Part B (101 mg, 0.25 mmol), the product from Example 2A, Part B (91 mg, 0.263 mmol), and potassium phosphate tribasic (111 mg, 0.525 mmol) in 3:1 tetrahydro-furan-water (12 mL) was degassed by nitrogen sparge for 20 min. The solution was then treated with PA-Ph (CAS 97739-46-3) (2.192 mg, 7.50 μmol) and tris(dibenzylideneacetone)palladium(0) (2.289 mg, 2.500 μmol) followed by degassing for another 5 min. The microwave tube was then sealed, warmed at 50° C. for 18 h, cooled and partitioned between EtOAc and water adjusting the pH to 1 with 1M HCl. The EtOAc layer was washed with water, saturated NaHCO3, and saturated NaCl. The organic layer was dried Na₂SO₄, stirred for 1 h with 3-mercaptopropyl functionalized silica, filtered and concentrated. The crude product was purified by chromatography on an ISCO 12 g silica cartridge eluting with 3% MeOH in CH₂Cl₂ to give an off-white foam (80 mg, 63%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.09 (s, 3H) 3.45 (s, 3H) 3.89 (s, 3H) 5.69 (d, J=7.72 Hz, 1H) 7.43 (dd, J=8.82, 2.21 Hz, 1H) 7.68-7.79 (m, 4H) 7.84 (d, J=7.72 Hz, 1H) 7.89-8.01 (m, 2H) 8.09 (s, 1H) 10.06 (s, 1H) 11.49 (s, 1H). MS (ESI−) m/z 494 (M−H)⁺.

Example 32 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-iodo-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.57)

Part A. Preparation of 1,3,5-triiodo-2-methoxybenzene

In a 250 mL pressure vessel was added 2,4,6-triiodophenol (5 g, 10.60 mmol) in MTBE (60 ml) to give a yellow solution. The solution was cooled in an ice bath and 2.0M trimethylsilyldiazomethane (7.95 ml, 15.90 mmol) was added at a fast drip followed by dropwise addition of methanol (6 mL) resulting in calm bubbling. The vessel was sealed and stirred at room temperature for 4 h. The reaction solution was partitioned between EtOAc and water and the organic layer was washed with 1M HCl, saturated NaHCO₃, and saturated NaCl. The EtOAc was dried (MgSO₄), filtered and concentrated to give a tan solid that was used without purification (4.8 g, 94%).

Part B. Preparation of 1-(3,5-diiodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

To a 100 mL round-bottom flask under N₂ was added the product from Part A (3.5 g, 7.2 mmol), 1H-pyrimidine-2,4-dione (0.97 g, 8.64 mmol), and potassium phosphate tribasic (3.2 g, 15.0 mmol) in DMSO (50 ml) to give a colorless suspension. N-(2-cyanophenyl)picolinamide (320 mg, 1.44 mmol) was added and the mix was sparged with N₂ for 5 min. Copper(I) iodide (137 mg, 0.72 mmol) was added and the mix was sparged once again for 10 min, placed under N₂ and heated at 60° C. for 18 h. The mixture was cooled and partitioned between EtOAc and water adjusting the pH to 1 with HCl. The aqueous layer was extracted 2× with EtOAc. The organics were combined, washed with water, saturated NaHCO₃, and saturated NaCl, dried (Na₂SO₄), treated with 3-mercaptopropyl functionalized silica, filtered and concentrated. The resulting solid was triturated in 2:1 hexane/EtOAc to give an off white powder (2.2 g, 62%).

Part C. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-iodo-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide

A mixture of the product from Part B 1-(3,5-diiodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (118 mg, 0.25 mmol), the product from Example 2A, Part B (87 mg, 0.25 mmol), 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride CH₂Cl₂ complex (10.21 mg, 0.013 mmol) and sodium carbonate (0.250 ml, 0.25 mmol) in toluene (1.0 ml) and ethanol (1.0 ml) was sparged with nitrogen for 5 min and microwaved at 100° C. for 30 min. The mixture was cooled and partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica eluting with ethyl acetate/hexane (2:3 to 4:1) to give the title compound (16 mg, 11%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.08 (s, 3H) 3.35 (s, 3H) 5.67 (d, J=8.09 Hz, 1H) 7.42 (dd, J=8.82, 2.21 Hz, 1H) 7.59 (d, J=2.57 Hz, 1H) 7.73 (m, 2H) 7.81 (d, J=8.09 Hz, 1H) 7.95 (m, 3H) 8.09 (s, 1H) 10.06 (s, 1H) 11.47 (s, 1H). MS (ESI−) m/z 562 (M−H)⁺.

Example 33 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-((trimethylsilyl)ethynyl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.78)

In a 5 mL microwave tube were combined ethynyltrimethylsilane (0.044 ml, 0.32 mmol), the product from Example 32 (45.1 mg, 0.08 mmol), copper(I) iodide (0.762 mg, 4.0 μmol), bis(triphenyl-phosphine)palladium(II) chloride (2.81 mg, 4.0 μmol) and triethylamine (0.056 ml, 0.40 mmol) in acetonitrile (2 ml). The mixture was sparged with nitrogen for 5 min, sealed and microwaved at 80° C. for 20 min. The reaction mixture was cooled and partitioned with ethyl acetate and water. The organic layer was washed with brine, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica eluting with 1-4% methanol in CH₂Cl₂ to give a solid, (18 mg, 42%) m.p. 175-178° C. ¹H NMR (300 MHz, DMSO-D6) δ ppm 0.25 (s, 9H) 3.07 (s, 3H) 3.65 (s, 3H) 5.66 (dd, J=7.91, 2.02 Hz, 1H) 7.41 (dd, J=8.82, 2.21 Hz, 1H) 7.58 (m, 2H) 7.69 (dd, J=8.46, 1.84 Hz, 1H) 7.72 (d, J=2.21 Hz, 1H) 7.81 (d, J=7.72 Hz, 1H) 7.93 (m, 2H) 8.05 (d, J=1.32 Hz, 1H) 10.04 (s, 1H) 11.45 (d, J=2.21 Hz, 1H). MS (ESI+) m/z 534 (M+H)⁺.

Example 34 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(methylsulfonyl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.68)

Part A. Preparation of 4-nitrobenzene-2-diazo-1-oxide

To a 250 mL round-bottom flask was added 2-amino-4-nitrophenol (6.165 g, 40.0 mmol) in 48% tetrafluoroboric acid (15 ml). Sodium nitrite (2.76 g, 40.0 mmol) in water (6 ml) was added dropwise at 0° C. and the mixture was stirred at room temperature for 30 min. The solid was collected by filtration, washed with tetrafluoroboric acid and water. The solid was suspended in acetone (50 ml), filtered and dried to give a solid (3.31 g, 50%).

Part B. Preparation of 2-(methylthio)-4-nitrophenol

To a 1 L beaker was added the product from Part A (2.70 g, 16.35 mmol) in ice water (250 g) to give a brown suspension. Copper (0.520 g, 8.18 mmol) was added, followed by addition of sodium thiomethoxide (2.292 g, 32.7 mmol) in water (50 ml) slowly. The mixture was stirred at room temperature for 24 h. The mixture was filtered and the filtrate was acidified with 1M HCl producing a solid that was collected by filtration and dried (2.53 g, 84%).

Part C. Preparation of 2-(methylsulfonyl)-4-nitrophenol

To a 250 mL round-bottom flask was added the product from Part B (1.111 g, 6.00 mmol) in MeOH (20 ml) to give a brown suspension. Oxone (7.746 g, 12.60 mmol) in water (20 ml) was added slowly at 0° C. The mixture was warmed to room temperature, stirred for 1 h and partitioned with ethyl acetate and 1M HCl. The organic layer was washed with brine, dried with sodium sulfate, filtered and evaporated. The residue was chromatographed on silica gel eluting with 1% to 5% methanol in CH₂Cl₂ to give a solid (0.472 g, 36%).

Part D. Preparation of 2-iodo-6-(methylsulfonyl)-4-nitrophenol

To a 50 mL round-bottom flask was added the product from Part C (470 mg, 2.164 mmol) in MeOH (10 ml) and water (2.5 ml). Iodine monochloride (0.130 ml, 2.60 mmol) in CH₂Cl₂ (2.0 mL) was added dropwise and the mixture was stirred at room temperature, poured into water (200 mL) and stirred for 10 min. The resulting solid was collected by filtration and dried (636 mg, 86%).

Part E. Preparation of 1-iodo-2-methoxy-3-(methylsulfonyl)-5-nitrobenzene

To a 50 mL pressure vessel was added the product from Part D (630 mg, 1.836 mmol) in MTBE (6 ml) to give a yellow solution. The mixture was cooled in an ice bath and 2M trimethylsilyldiazomethane (1.377 ml, 2.75 mmol) was added at a fast drip followed by dropwise addition of MeOH (0.4 ml) resulting in calm bubbling. The vessel was sealed and stirred at room temperature for 1 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated to give an off-white solid (655 mg, 100%).

Part F. Preparation of 3-iodo-4-methoxy-5-(methylsulfonyl)aniline

To a 250 mL round-bottom flask was added the product from Part E (0.650 g, 1.820 mmol), ammonium chloride (0.146 g, 2.73 mmol), and iron (0.508 g, 9.10 mmol) in THF/MeOH/water (50 ml, 2/2/1). The mixture was refluxed for 2 h, cooled and filtered. The filtrate was evaporated and the residue was partitioned with ethyl acetate and water. The organic layer was washed with brine, dried with sodium sulfate, filtered and evaporated to give a solid (590 mg, 99%).

Part G. Preparation of (E)-N-(3-iodo-4-methoxy-5-(methylsulfonyl)phenylcarbamoyl)-3-methoxyacrylamide

To a 100 mL round-bottom flask was added the product from Part F (500 mg, 1.528 mmol) in DMF (15.0 ml). The solution was cooled under nitrogen to −20° C. and (E)-3-methoxyacryloyl isocyanate (15.28 ml, 6.11 mmol; prepared as described by Santana, L.; et al. J. Heterocyclic Chem. 1999, 36, 293-295) was added dropwise. The mixture was stirred at this temperature for 15 min, then warmed to room temperature and stirred for 45 min. The mixture was diluted with ethyl acetate and washed by water (3×50 ml), brine (3×50 ml), dried with sodium sulfate, filtered and evaporated. The residue was triturated with ethyl acetate/hexane to give a solid (425 mg, 61%).

Part H. Preparation of 1-(3-iodo-4-methoxy-5-(methylsulfonyl)phenyl)pyrimidine-2,4(1H,3H)-dione

To a 100 mL round-bottom flask was added the product from Part G (420 mg, 0.925 mmol) in ethanol (10 ml) to give a suspension. Concentrated sulfuric acid (1 mL, 18.76 mmol) in water (10 ml) was added and the mixture was heated at 110° C. for 2 h. The reaction mix was cooled, diluted with water (50 ml) and stirred for 10 min. The solid material was collected by filtration, washed with water and dried to give a white solid (325 mg, 83%).

Part I. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(methylsulfonyl)phenyl)naphthalen-2-yl)methanesulfonamide

To a 5 mL microwave tube was added the product from Part H (63.3 mg, 0.15 mmol), the product from Example 2A, Part B (52.1 mg, 0.150 mmol), 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride complex (6.12 mg, 7.50 μmol) and 1M sodium carbonate (0.150 ml, 0.150 mmol) in the solvents of toluene (1.0 ml) and ethanol (1.0 ml). The vessel was sealed and the mixture was sparged with nitrogen for 5 min and microwaved at 100° C. for 30 min. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated. The residue was purified on silica gel eluting with 1% to 8% methanol in CH₂Cl₂ to give crude product. A final trituration in 1:1 methanol/ethyl acetate afforded pure solid (26 mg, 34%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.10 (s, 3H) 3.44 (s, 3H) 3.45 (s, 3H) 5.71 (d, J=8.09 Hz, 1H) 7.44 (dd, J=8.82, 2.21 Hz, 1H) 7.75 (d, J=1.84 Hz, 1H) 7.80 (dd, J=8.46, 1.84 Hz, 1H) 7.86 (d, J=8.09 Hz, 1H) 7.91 (d, J=2.57 Hz, 1H) 7.96 (d, J=2.57 Hz, 1H) 8.00 (m, 2H) 8.16 (d, J=1.47 Hz, 1H) 10.10 (s, 1H) 11.51 (s, 1H). MS (ESI+) m/z 533 (M+NH4)⁺.

Example 35 Preparation of N-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)phenyl)methanesulfonamide (compound IB-L0-2.75)

Part A. Preparation of 2,4-diiodo-6-nitrophenol

To a solution of 2-nitrophenol (2.78 g, 20 mmol) in MeOH (120 ml) and water (30 mL) was added dropwise a solution of iodine monochloride (2.105 ml, 42.0 mmol) in 10 mL CH₂Cl₂. The mixture was stirred for 2 h, poured into 600 mL water, stirred and sonicated for 30 min. The mixture was filtered to collect a yellow solid that was washed 3× with water (50 mL each wash) and dried to constant mass (7.3 g, 93%). m

Part B. Preparation of 1,5-diiodo-2-methoxy-3-nitrobenzene

A 50 mL pressure vessel was charged with the product from Part A and MTBE (10 ml) to give a yellow solution. The solution was cooled in an ice bath and 2M trimethylsilyldiazomethane (2.251 ml, 4.50 mmol) was added at a fast drop followed by dropwise addition of MeOH (0.6 ml) resulting in calm bubbling. The vessel was sealed and stirred allowing warm to room temperature over 4 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated to give a yellow solid (1.22 g, 100%).

Part C. Preparation of 3,5-diiodo-2-methoxyaniline

In a 250 round-bottom flask was added the product from Part B (0.98 g, 2.420 mmol), ammonium chloride (0.194 g, 3.63 mmol), and iron (0.676 g, 12.10 mmol) in THF/methanol/water (20 ml/20 ml/10 ml). The mixture was refluxed for 16 ho, cooled and filtered. The filtrate was evaporated and the residue was partitioned with water and ethyl acetate. The organic layer was dried with sodium sulfate, filtered and evaporated to give an oil (780 mg, 86%).

Part D. Preparation of 1-(3-amino-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

In a 25 mL round-bottom flask was added the product from Part C (650 mg, 1.734 mmol), pyrimidine-2,4(1H,3H)-dione (214 mg, 1.907 mmol), N-(2-cyanophenyl)picolinamide (77 mg, 0.347 mmol), copper(I) iodide (33.0 mg, 0.173 mmol) and potassium phosphate (773 mg, 3.64 mmol) in DMSO (5 ml). The vessel was sealed and the mixture was sparged with nitrogen for 15 min and heated at 60° C. for 16 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was chromatographed on silica eluting with 5:95 methanol/D CH₂Cl₂CM to give a solid (125 mg, 20%).

Part E. Preparation of N-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-iodo-2-methoxy-phenyl)methanesulfonamide

A solution of the product from Part D (110 mg, 0.306 mmol) in pyridine (2 ml) was treated with methanesulfonyl chloride (0.048 ml, 0.612 mmol) and stirred for 24 h. The solvent was evaporated and the residue was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with brine, dried with sodium sulfate, filtered and evaporated. The residue was purified on silica gel eluting with 2% to 5% methanol in CH₂Cl₂ to give a solid (20 mg, 15%).

Part F. Preparation of N-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(6-(methylsulfonamido)naphthalen-2-yl)phenyl)methanesulfonamide

To a 5 mL microwave tube was added the product from Part E (18 mg, 0.041 mmol), Example 2A, Part B (14.30 mg, 0.041 mmol), potassium phosphate (18.35 mg, 0.086 mmol), PA-Ph (CAS 97739-46-3) (0.361 mg, 1.235 μmol) and tris(dibenzylideneacetone)dipalladium(0) (0.377 mg, 0.412 μmol) in THF (3.0 ml) and water (1.0 ml). The vessel was sealed and the mixture was sparged with nitrogen for 5 min and heated at 50° C. for 2 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, filtered and evaporated. The residue was purified on silica gel eluting with 2% to 5% methanol in CH₂Cl₂ to give a solid. A final trituration in 1:1 methanol/CH₂Cl₂ gave the desired product (7 mg, 32%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.09 (s, 3H) 3.17 (s, 3H) 3.37 (s, 3H) 5.69 (dd, J=7.91, 2.02 Hz, 1H) 7.34 (d, J=2.57 Hz, 1H) 7.43 (dd, J=8.82, 2.21 Hz, 1H) 7.47 (d, J=2.57 Hz, 1H) 7.73 (m, 2H) 7.81 (d, J=8.09 Hz, 1H) 7.94 (d, J=6.25 Hz, 1H) 7.97 (d, J=6.62 Hz, 1H) 8.07 (s, 1H) 9.45 (s, 1H) 10.05 (s, 1H) 11.45 (d, J=1.84 Hz, 1H). MS (ESI−) m/z 529 (M−H).

Example 36 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(trifluoromethyl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.56)

Part A. Preparation of 4-iodo-2-(trifluoromethyl)phenol

To a solution of 2-(trifluoromethyl) phenol (3.24 g, 20 mmol) in MeOH (40 ml) was added sodium hydroxide (0.960 g, 24.0 mmol) and stirred until the hydroxide was dissolved. The mixture was cooled to 0° C. and sodium iodide was added (3.0 g, 20 mmol) followed by dropwise addition of 10% aqueous sodium hypochlorite (9.0 ml, 14.6 mmol). The addition of sodium iodide followed by sodium hypochlorite was repeated twice more. The mixture was stirred at ambient temperature for 2 h and treated dropwise with concentrated HCl to pH 1. The mixture was extracted 3× with EtOAc. The extracts were combined, washed with brine, dried with sodium sulfate, filtered and evaporated. The residue was purified on silica gel eluting with EtOAc/hexane (1:9) to give the mono-iodo product (5.0 g, 87%).

Part B. Preparation of 2-bromo-4-iodo-6-(trifluoromethyl)phenol

In a 250 mL round-bottom flask was added the product from Part A (5.00 g, 17.36 mmol) and 1,3-dibromo-5,-dimethylhydantoin (2.73 g, 9.55 mmol) in CHCl₃ (80 ml) to give an orange solution. The mixture was stirred for 2 h, washed with water, brine, dried with sodium sulfate, filtered and evaporated. The crude product was purified on silica gel eluting with ethyl acetate/hexane (5:95) to give a solid (3.5 g, 54%).

Part C. Preparation of 1-bromo-5-iodo-2-methoxy-3-(trifluoromethyl)benzene

A mixture of the product from Part B (3.2 g, 8.72 mmol), iodomethane (1.36 ml, 21.8 mmol), and 50% sodium hydroxide (0.507 ml, 9.59 mmol) in acetone (20 ml) was stirred for 24 h. The solvent was evaporated and the residue was partitioned with ethyl acetate and water. The organic layer was washed with brine, dried with sodium sulfate, filtered and evaporated. The crude material was purified on silica gel eluting with ethyl acetate/hexane (5:95) to give a solid (2.67 g, 80%).

Part D. Preparation of 1-(3-bromo-4-methoxy-5-(trifluoromethyl)phenyl)pyrimidine-2,4(1H,3H)-dione

In a 20 mL microwave tube was added the product from Part C (762 mg, 2.0 mmol), pyrimidine-2,4(1H,3H)-dione (247 mg, 2.2 mmol), N-(2-cyanophenyl)picolinamide (89 mg, 0.4 mmol), copper(I) iodide (38.1 mg, 0.2 mmol) and potassium phosphate (892 mg, 4.2 mmol) in DMSO (10 ml). The vessel was sealed and the mixture was sparged with nitrogen for 15 min and heated at 60° C. for 16 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was purified on silica gel eluting with ethyl acetate/hexane (2:3) to give the desired product (63 mg, 9%).

Part E. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(trifluoromethyl)phenyl)naphthalen-2-yl)methanesulfonamide

In a 5 mL microwave tube was added the product from Part D (60 mg, 0.164 mmol), the product from Example 2A, Part B (62.8 mg, 0.181 mmol), 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (5.36 mg, 8.22 μmol) and potassium phosphate (69.8 mg, 0.329 mmol) in THF/water (3 ml/1 ml). The vessel was sealed and the mixture was sparged with nitrogen for 5 min and heated at 60° C. for 2 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was purified by reverse phase chromatography to give the title compound as a solid (26 mg, 31%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.10 (s, 3H) 3.37 (s, 3H) 5.71 (dd, J=7.72, 2.21 Hz, 1H) 7.44 (dd, J=8.82, 2.21 Hz, 1H) 7.75 (s, 1H) 7.78 (d, J=1.84 Hz, 1H) 7.88 (m, 3H) 7.98 (d, J=3.31 Hz, 1H) 8.01 (d, J=3.68 Hz, 1H) 8.15 (s, 1H) 10.09 (s, 1H) 11.51 (d, J=2.21 Hz, 1H). MS (ESI−) m/z 504.1 (M−H)⁺.

Example 37 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(perfluoroethyl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.60)

Part A. Preparation of 1-methoxy-4-nitro-2-(perfluoroethyl)benzene

To a 250 mL round-bottom flask was added 2-bromo-1-methoxy-4-nitrobenzene (3.5 g, 15.08 mmol), copper(I) iodide (5.75 g, 30.2 mmol), and sodium 2,2,3,3,3-pentafluoropropanoate (5.25 g, 28.2 mmol) in DMF (75 ml) and toluene (25 ml) to give a tan suspension. The mixture was heated at 150° C. and toluene was removed by a Dean-Stark trap. The mixture was heated at 155° C. for 6 h under nitrogen, cooled and poured into 100 mL of water and 100 mL of ether, filtered through a 1-inch plug of Celite and the plug was rinsed with ether. The filtrate layers were separated. The organic layer was washed with brine, dried (Na₂SO₄) filtered and concentrated. The dark oil was flash chromatographed on an Isco 40 g silica cartridge eluting with 4:1 hexane/EtOAc to give a yellow oil that was a (3:1) mix of desired material and starting material (1.5 g, 37%).

Part B. Preparation of 4-nitro-2-(perfluoroethyl)phenol

In a 100 mL round-bottom flask was added the product from Part A (1.4 g, 5.16 mmol) and pyridine hydrochloride (4 g, 34.6 mmol) neat. The mixture was heated at 210° C. for 20 min, cooled, and partitioned between EtOAc and water. The organic layer was washed with brine, dried (Na₂SO₄) and concentrated. The crude product was flash chromatographed on an Isco 12 g silica cartridge eluting with 3:2 hexane/EtOAc to give a yellow oil (1.3 g, 98%).

Part C. Preparation of 2-iodo-4-nitro-6-(perfluoroethyl)phenol

In a 100 mL round-bottom flask was added the product from Part B (1.3 g, 5.06 mmol) and N-iodosuccinimide (1.251 g, 5.56 mmol) in acetonitrile (16.85 ml) to give a yellow solution. The solution was stirred for 16 h, diluted with 100 mL EtOAc and washed 2×50 ml with 10% sodium thiosulfate, brine, dried (Na₂SO₄) and concentrated to an orange semisolid. The semisolid was flash chromatographed on an Isco 40 g silica cartridge eluting with 3:1 hexane EtOAc to give a deep yellow/orange oil (1.3 g, 67%).

Part D. Preparation of 1-iodo-2-methoxy-5-nitro-3-(perfluoroethyl)benzene

In a 100 mL round-bottom flask was added the product from Part C (1.04 g, 2.72 mmol) potassium carbonate (0.563 g, 4.07 mmol) and dimethyl sulfate (0.411 g, 3.26 mmol) in acetone (20 ml) to give a brown suspension. The mixture was heated at gentle reflux for 16 h, cooled, diluted into EtOAc, washed with water and brine. The organic layer was dried Na2SO4, filtered and concentrated to a yellow oil that was purified by flash chromatography on an Isco 40 g silica cartridge eluting with 9:1 hexane/EtOAc (600 mg, 56%).

Part E. Preparation of 3-iodo-4-methoxy-5-(perfluoroethyl)aniline

In a 250 mL round-bottom flask was added the product from Part D (0.6 g, 1.511 mmol), iron (0.422 g, 7.56 mmol), and ammonium chloride (0.121 g, 2.267 mmol) in a solvent mix of EtOH (9 ml), THF (9 ml) and water (3 ml) to give a brown suspension that was heated at 95-100° C. for 2 h. The reaction mix was filtered through a plug of Celite and the Celite was rinsed repeatedly with EtOH. The filtrate was concentrated and the residue was dissolved in EtOAc, washed with water, brine, dried (Na₂SO₄), filtered and concentrated to give an oil (560 mg, 99%).

Part F. Preparation of 1,5-diiodo-2-methoxy-3-(perfluoroethyl)benzene

In a 25 mL round-bottom flask under nitrogen was added the product from Part E (0.565 g, 1.539 mmol), tert-butyl nitrite (0.293 ml, 2.463 mmol), copper(I) iodide (0.293 g, 1.539 mmol), sodium iodide (0.231 g, 1.539 mmol) and iodine (0.195 g, 0.770 mmol) in DME (15.39 ml) to give a brown suspension. The mixture was heated at 60° C. for 3 h, cooled and filtered through Celite washing the Celite pad well with EtOAc. The EtOAc filtrate was treated with 10% sodium thiosulfate, brine, dried (Na₂SO₄), filtered and concentrated to a dark oil. The crude material was purified by flash chromatography on an Isco 40 g silica cartridge eluting with 95:5 hexane/EtOAc to give a yellow oil (360 mg, 49%).

Part G. Preparation of 1-(3-iodo-4-methoxy-5-(perfluoroethyl)phenyl)pyrimidine-2,4(1H,3H)-dione

In a 20 mL microwave tube was added the product from Part F (0.36 g, 0.753 mmol), 1H-pyrimidine-2,4-dione (0.101 g, 0.904 mmol), potassium phosphate tribasic (0.336 g, 1.582 mmol) N-(2-cyanophenyl)picolinamide (0.034 g, 0.151 mmol) and copper(I) iodide (0.014 g, 0.075 mmol in DMSO (7 ml). The vessel was sealed and the mixture was sparged with N₂ for 30 min, heated at 60° C. for 24 h, cooled and diluted into EtOAc. The EtOAc layer was washed with 1M HCl, saturated NaHCO3, and saturated NaCl, dried (Na₂SO₄), filtered and concentrated. The residue was flash chromatographed on an Isco 40 g silica cartridge eluting with hexane->1:1 hexane/EtOAc to give a yellow foam (100 mg, 29%).

Part H. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(perfluoroethyl)phenyl)naphthalen-2-yl)methanesulfonamide

In a 5 mL microwave tube were combined the product from Part G (0.10 g, 0.216 mmol), Example 2A, Part B (0.075 g, 0.216 mmol), and potassium phosphate tribasic (0.096 g, 0.454 mmol) in 3:1 tetrahydrofuran-water (5 mL) and degassed by nitrogen sparge for 10 min. The mixture was then treated with PA-Ph (CAS 97739-46-3) (1.898 mg, 6.49 μmol) and tris(dibenzylideneacetone)dipalladium(0) (1.982 mg, 2.164 μmol) followed by degassing for another 5 min. The flask was then sealed and stirred at 50° C. for 16 h and partitioned between EtOAc and water. The EtOAc layer was washed with 0.1M HCl, saturated NaHCO₃, and saturated NaCl. The organic was dried Na₂SO₄, stirred for 0.5 h with 3-mercaptopropyl functionalized silica to remove metals, filtered and concentrated. The crude product was purified by chromatography on an Isco 12 g silica cartridge eluting with CH₂Cl₂->3% MeOH in CH₂Cl₂ to give a light yellow foam (84 mg, 99%) m.p. 162-165° C. ¹H NMR (300 MHz, DMSO-D6) δ ppm 3.10 (s, 3H) 3.33 (s, 3H) 5.70 (d, J=7.72 Hz, 1H) 7.44 (dd, J=8.82, 2.21 Hz, 1H) 7.70-7.76 (m, 2H) 7.80 (d, J=2.57 Hz, 1H) 7.86 (d, J=8.09 Hz, 1H) 7.91 (d, J=2.57 Hz, 1H) 8.00 (dd, J=8.82, 2.94 Hz, 2H) 8.12 (s, 1H) 10.10 (s, 1H) 11.50 (s, 1H). MS (ESI−) m/z 554 (M−H)⁺.

Example 38 Preparation of (E)-N′-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(thiophen-2-yl)phenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide (compound IB-L0-2.51)

Part A. Preparation of 1-(3-bromo-4-methoxy-5-(1-oxo-2,3-dihydro-1H-inden-5-yl)phenyl)-pyrimidine-2,4(1H,3H)-dione

In a 100 mL round-bottom flask was added the product from Example 18, Part C (846 mg, 2.00 mmol), Example 4, Part A (516 mg, 2.000 mmol), potassium phosphate (892 mg, 4.20 mmol), PA-Ph (CAS 97739-46-3) (17.54 mg, 0.060 mmol) and tris(dibenzylideneacetone)-dipalladium(0) (18.31 mg, 0.020 mmol) in THF (12.0 ml) and water (4.0 ml). The vessel was sealed and the mixture was sparged with nitrogen for 5 min and stirred at ambient temperature for 72 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered through celite and evaporated. The residue was purified with silica gel eluting with 1 to 4% methanol in CH₂Cl₂ to give a solid (690 mg, 81%).

Part B. Preparation of (E)-N′-(5-(3-bromo-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide

In a 50 mL round-bottom flask was added the product from Part A (685 mg, 1.603 mmol) and methanesulfonohydrazide (194 mg, 1.764 mmol) in MeOH (20 ml). The mixture was warmed to 40° C. and stirred for 24 h. The mixture was cooled, filtered and washed with methanol to give a solid (569 mg, 68%).

Part C. Preparation of (E)-N′-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(thiophen-2-yl)phenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide

In a 5 mL microwave tube was added the product from Part B (52 mg, 0.100 mmol), thiophen-2-ylboronic acid (12.81 mg, 0.100 mmol), 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (3.26 mg, 5.01 μmol) and potassium phosphate (42.5 mg, 0.200 mmol) in THF (3.0 ml) and water (1.0 ml). The mixture was sparged by nitrogen for 5 min and heated at 50° C. for 3 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered through celite and evaporated. The residue was purified by reverse phase chromatography AA method to give a white solid (27 mg, 52%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 2.86 (m, 2H) 3.09 (s, 3H) 3.14 (m, 2H) 3.32 (s, 3H) 5.69 (d, J=7.72 Hz, 1H) 7.18 (dd, J=5.15, 3.68 Hz, 1H) 7.41 (d, J=2.57 Hz, 1H) 7.63 (m, 3H) 7.75 (m, 2H) 7.86 (d, J=8.09 Hz, 1H) 7.91 (d, J=2.94 Hz, 1H) 9.96 (s, 1H) 11.48 (s, 1H). MS (ESI+) m/z 523 (M+H)⁺.

Example 39 Preparation of (E)-N′-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(furan-2-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-ylidene)methanesulfonohydrazide (compound IB-L0-2.55)

In a 5 ml microwave tube was added the product from Example 38, Part B (52 mg, 0.100 mmol), furan-2-ylboronic acid (11.20 mg, 0.100 mmol), 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (3.26 mg, 5.01 μmol) and potassium phosphate (42.5 mg, 0.200 mmol) in THF (3.0 ml) and water (1.0 ml). The mixture was sparged by nitrogen for 5 min and heated at 50° C. for 3 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered through celite and evaporated. The residue was purified by reverse phase chromatography AA method to give a solid (24 mg, 47%). ¹H NMR (300 MHz, DMSO-D6) δ ppm 2.86 (m, 2H) 3.09 (s, 3H) 3.14 (m, 2H) 3.36 (s, 3H) 5.68 (d, J=8.09 Hz, 1H) 6.69 (dd, J=3.31, 1.84 Hz, 1H) 7.09 (d, J=3.31 Hz, 1H) 7.41 (d, J=2.57 Hz, 1H) 7.62 (m, 2H) 7.75 (d, J=8.09 Hz, 1H) 7.80 (d, J=2.57 Hz, 1H) 7.86 (m, 2H) 9.97 (s, 1H) 11.46 (s, 1H). MS (ESI+) m/z 507 (M+H)⁺.

Example 40 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-ethoxyphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.23)

Part A. Preparation of 2-tert-butyl-4-iodophenol

To a 250 mL round-bottom flask was added 2-tert-butylphenol (3.76 g, 25 mmol) in MeOH (50.0 ml) to give a colorless solution. Sodium hydroxide (1.200 g, 30.0 mmol) was added and the mix was stirred until the hydroxide was completely dissolved. The solution was cooled to 0° C. and treated with sodium iodide (1.75 g, 11.6 mmol) followed by dropwise addition of 10% sodium hypochlorite solution (7.2 ml, 11.6 mmol). The addition of sodium iodide followed by sodium hypochlorite was repeated twice and the mixture was stirred at 0° C. for 30 min. The mixture was treated with 10% w/w solution of sodium thiosulfate, stirred for 30 min and treated with concentrated HCl dropwise to a constant pH of 1. The mixture was extracted 3× with EtOAc. The extracts were combined, washed with brine, dried (MgS04), filtered and concentrated. The crude oil was flash chromatographed on an ISCO 80 g silica cartridge eluting with hexane->4:1 hexane/EtOAc to give a yellow oil (5.2 g, 75%).

Part B. Preparation of 2-bromo-6-tert-butyl-4-iodophenol

To a 250 mL round-bottom flask was added the product from Part A (4.8 g, 17.38 mmol) and 1,3-dibromo-5,5-dimethylhydantoin (2.61 g, 9.13 mmol) in chloroform (87 ml) to give an orange solution. The reaction mixture was stirred for 2 h resulting in a black solution that was washed with water, brine, dried (Na₂SO₄) and concentrated. The black oil was flash chromatographed on a 120 g Isco silica cartridge eluting with hexane to give a pinkish solid (4.84 g, 78%).

Part C. Preparation of 1-bromo-3-tert-butyl-2-ethoxy-5-iodobenzene

To a 50 mL round-bottom flask was added the product from Part B (888 mg, 2.5 mmol), ethyl iodide (409 mg, 2.63 mmol), and potassium carbonate (415 mg, 3.00 mmol) in acetone (12 ml) to give a green suspension. The mixture was heated at reflux for 16 h, cooled and concentrated. The residue was partitioned between water and EtOAc. The organic layer was washed twice with brine, dried over Na₂SO₄, filtered and concentrated to a red oil. The oil was flash chromatographed on an Isco 40 g silica cartridge eluting with hexane to give a clear oil (820 mg, 86%).

Part D. Preparation of 1-(3-bromo-5-tert-butyl-4-ethoxyphenyl)pyrimidine-2,4(1H,3H)-dione

In a 20 mL microwave tube under nitrogen flush was added the product from Part C (0.4 g, 1.044 mmol), 1H-Pyrimidine-2,4-dione (0.140 g, 1.253 mmol), and potassium phosphate tribasic (0.465 g, 2.193 mmol) in DMSO (5 ml) to give a colorless suspension. N-(2-cyanophenyl)picolinamide (0.047 g, 0.209 mmol) was added and the mix was sparged with nitrogen for 10 min. Copper(I) iodide (0.020 g, 0.104 mmol) was added and the mix was sparged once again for 10 min, placed under nitrogen and heated at 60° C. for 18 h. The mixture was cooled and partitioned between EtOAc and water adjusting the pH to 1 with HCl. The aqueous layer was extracted 2× with EtOAc. The organics were combined, washed with water, saturated NaHCO₃, and saturated NaCl. The organic layer was dried (Na₂SO₄), stirred with 3-mercaptopropyl functionalized silica for 1 h, filtered and concentrated. The crude product was purified by chromatography on an ISCO 12 g silica cartridge eluting with 2% MeOH in CH₂Cl₂ to give a white powder (266 mg, 69%).

Part E. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-ethoxyphenyl)naphthalen-2-yl)methanesulfonamide

In a 5 mL microwave tube was added the product from Part D (55.1 mg, 0.15 mmol), the product from Example 2A, Part B (52.1 mg, 0.150 mmol), potassium phosphate tribasic (63.7 mg, 0.300 mmol) and 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (4.89 mg, 7.50 μmol) in THF (3 ml) water (1 ml). The mixture was sparged for 10 min with nitrogen, heated sealed at 50° C. for 4 h, cooled and diluted into EtOAc. The EtOAc layer was washed with 1M HCl, saturated NaHCO₃, saturated NaCl, dried (Na₂SO₄) and treated simultaneously with mercaptopropyl silica gel, filtered and concentrated. The residue was flash chromatographed on a 12 g Isco silica cartridge eluting with 2% MeOH in CH₂Cl₂ to give a solid, (16 mg, 21%) m.p. 196-202° C. ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.00 (t, J=6.99 Hz, 3H) 1.44 (s, 9H) 3.09 (s, 3H) 3.43 (q, J=7.11 Hz, 2H) 5.64 (dd, J=7.91, 1.29 Hz, 1H) 7.32 (d, J=2.94 Hz, 1H) 7.36 (d, J=2.94 Hz, 1H) 7.41 (dd, J=8.82, 2.21 Hz, 1H) 7.72 (s, 1H) 7.74 (d, J=1.47 Hz, 1H) 7.80 (d, J=7.72 Hz, 1H) 7.90-8.00 (m, 2H) 8.05 (s, 1H) 10.04 (s, 1H) 11.41 (s, 1H). MS (ESI−) m/z 506 (M−H)⁺.

Example 41 Preparation of N-(6-(3-tert-butyl-2-chloro-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.14)

Part A. Preparation of 2-bromo-6-tert-butyl-4-iodoaniline

In a 50 mL round-bottom flask was added 2-bromo-6-tert-butylaniline [prepared by the method of Onitsuka, et. al. Organometallics, 25(5), 2006, pp 1270-1278](1.18 g, 5.17 mmol) and sodium bicarbonate (0.782 g, 9.31 mmol) in water (5 ml). The mixture was cooled in an ice bath and iodine (1.444 g, 5.69 mmol) was added in several portions. The mixture was warmed to ambient temperature and stirred for 16 h. The mixture was treated with aqueous sodium thiosulfate, extracted by ethyl acetate, dried with sodium sulfate, filtered and evaporated. The residue was purified on silica gel eluting with 5% ethyl acetate in hexane to give an oil (1.2 g, 65%).

Part B. Preparation of 1-bromo-3-tert-butyl-2-chloro-5-iodobenzene

To a mixture of tert-butyl nitrite (0.198 ml, 1.5 mmol) and copper(II) chloride (161 mg, 1.2 mmol) in acetonitrile (5 mL) was added the product from Part A (354 mg, 1.0 mmol) as a solution in acetonitrile (5 mL). The mixture was heated at 60° C. for 30 min, cooled, partitioned with ethyl acetate and 1M HCl. The organic layer was washed with brine, dried with sodium sulfate, filtered and evaporated. The residue was purified on silica gel eluting with 5% ethyl acetate in hexane to give the product (300 mg, 81%).

Part C. Preparation of 1-(3-bromo-5-tert-butyl-4-chlorophenyl)pyrimidine-2,4(1H,3H)-dione

In a 20 mL microwave tube was added the product from Part B (300 mg, 0.803 mmol), pyrimidine-2,4(1H,3H)-dione (99 mg, 0.884 mmol), N-(2-cyanophenyl)picolinamide (35.9 mg, 0.161 mmol), copper(I) iodide (15.30 mg, 0.080 mmol) and potassium phosphate (358 mg, 1.687 mmol) in DMSO (5 ml). The mixture was sealed, purged with nitrogen and heated at 60° C. for 4 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was purified on silica gel eluting with 10% to 40% ethyl acetate in hexane to give a solid (175 mg, 61%).

Part D. Preparation of N-(6-(3-tert-butyl-2-chloro-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl)naphthalen-2-yl)methanesulfonamide

In a 5 mL microwave tube was added the product from Part C (35.8 mg, 0.10 mmol), the product from Example 2A, Part B (38.2 mg, 0.110 mmol), 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (3.26 mg, 5.00 μmol) and potassium phosphate (42.5 mg, 0.200 mmol) in THF/Water (3 ml:1 ml). The mixture was purged with nitrogen for 5 min and heated at 60° C. for 2 h. The mixture was partitioned with ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered and evaporated. The residue was purified on silica gel eluting with 1:1 ethyl acetate/hexane to give a solid that was triturated with 1% methanol in CH₂Cl₂ to give a white solid (29 mg, 55%), melting point: >280° C. ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.53 (s, 9H) 3.08 (s, 3H) 5.69 (d, J=7.72 Hz, 1H) 7.42 (m, 2H) 7.52 (dd, J=8.46, 1.84 Hz, 1H) 7.56 (d, J=2.57 Hz, 1H) 7.74 (d, J=1.84 Hz, 1H) 7.84 (d, J=7.72 Hz, 1H) 7.88 (s, 1H) 7.91 (d, J=8.82 Hz, 1H) 7.95 (d, J=9.19 Hz, 1H) 10.04 (s, 1H) 11.46 (s, 1H). MS (ESI−) m/z 496 (M−H)⁺.

Example 42 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]isoxazol-3-yl)methyl)methanesulfonamide (compound IB-L0-2.45)

Part A. Preparation of N-((6-bromobenzo[d]isoxazol-3-yl)methyl)-N-(4-methoxybenzyl)-methanesulfonamide

To a refluxing solution of 6-bromo-3-methylbenzo[d]isoxazole (1.0 g, 4.72 mmol) in CCl₄ (25 ml) was added 1-bromopyrrolidine-2,5-dione (0.923 g, 5.19 mmol) and benzoic peroxyanhydride (0.114 g, 0.472 mmol). The mixture was refluxed for 6 h, and then cooled to room temperature, filtered thru celite, and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using CH₂Cl₂ as the eluent to give the dibromide as a solid (0.84 g, 43%). To a solution of the dibromide (0.20 g, 0.687 mmol) and N-(4-methoxybenzyl)methanesulfonamide (0.148 g, 0.687 mmol) in EtOH (3 ml) was added 1N aq. NaOH (0.722 ml, 0.722 mmol), and the resulting mixture was stirred at 80° C. for 90 min. The mixture was partitioned between 0.1N aq. HCL (10 mL) and EtOAc (2×10 mL), and the combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 2:3 EtOAc:hexanes as eluent to give the title compound as an oil (65 mg, 22%).

Part B. Preparation of N-(4-methoxybenzyl)-N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]isoxazol-3-yl)methyl)methanesulfonamide

A solution of the product from Part A (56 mg, 0.132 mmol), bis(pinacolato)diboron (37 mg, 0.145 mmol), and potassium acetate (39 mg, 0.395 mmol) in 1,4-dioxane (1.3 mL) was degassed by bubbling with N₂ gas for 15 min. 1,1′-Bis(diphenylphosphino)ferrocene-palladium(I)dichloride dichloromethane complex (3 mg, 0.004 mmol) was added, and the resulting mixture was stirred at 80° C. for 16 h, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 1:2 EtOAc:hexanes as the eluent to give the title compound as a colorless oil (49 mg, 79%).

Part C. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]isoxazol-3-yl)methyl)-N-(4-methoxybenzyl)methanesulfonamide

A mixture of the product from Example C (31.8 mg, 0.079 mmol), the product from Part B (45 mg, 0.095 mmol) in EtOH (0.5 mL), toluene (0.5 mL) 1M aq. Na₂CO₃ (0.095 mL, 0.095 mmol) was degassed by bubbling with N₂ gas for 10 min. 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II) dichloride dichloromethane complex (2 mg, 2.4 μmol) was added, and degassing with N₂ was continued for 5 min. The reaction mixture was sealed and heated at 100° C. in a microwave reactor for 1 h. The mixture was concentrated in vacuo, and the crude product was purified by column chromatography on silica gel using 1:9 MeOH:CHCl₃ as the eluent. The title compound was obtained as a light brown solid (41 mg, 83%).

Part D. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]isoxazol-3-yl)methyl)methanesulfonamide

A solution of the product from Part C (39 mg, 0.063 mmol) in TFA (0.5 mL) was stirred at 40° C. for 6 h. TFA was removed in vacuo and the crude product was purified by column chromatography on silica gel using 4% MeOH in CHCl₃ as the eluent to give the title compound (13 mg, 41%). ¹H NMR (300 MHz, CDCl₃) δ 8.39 (s, 1H) 7.74-7.82 (m, 2H) 7.57 (dd, J=8.27, 1.65 Hz, 1H) 7.36 (d, J=7.72 Hz, 1H) 7.25 (d, J=2.57 Hz, 1H) 7.19 (d, J=2.94 Hz, 1H) 5.82 (dd, J=7.72, 2.21 Hz, 1H) 5.25-5.33 (m, 1H) 4.70 (d, J=6.25 Hz, 2H) 3.29 (s, 3H) 3.12 (s, 3H) 1.45 (s, 9H).

Example 43 Preparation of methyl 2-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-ylidene)hydrazinecarboxylate (compound IB-L0-2.24)

To a solution of the product from Example 4, Part B (0.05 g, 0.124 mmol) in MeOH (1 ml) was added methyl carbazate (17 mg, 0.185 mmol). The mixture was stirred at 60° C. for 16 h, and then concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 5% MeOH in CH₂Cl₂ as the eluent to give the title compound (44 mg, 74%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (s, 1H) 10.05 (s, 1H) 7.78 (d, J=8.09 Hz, 1H) 7.69 (d, J=7.72 Hz, 1H) 7.45-7.57 (m, 2H) 7.24-7.33 (m, 2H) 5.64 (d, J=8.09 Hz, 1H) 3.71 (s, 3H) 3.28 (s, 3H) 3.06-3.16 (m, 2H) 2.78-2.88 (m, 2H) 1.40 (s, 9H)

Example 44 Preparation of 1-(3-tert-butyl-4-methoxy-5-(1-oxoisoindolin-5-yl)phenyl)-pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.30)

Part A. Preparation of 5-bromo-2-(2,4-dimethoxybenzyl)isoindolin-1-one

To a solution of methyl 4-bromo-2-(bromomethyl)benzoate (1.0 g, 3.25 mmol) and (2,4-dimethoxyphenyl)methanamine (0.65 g, 3.90 mmol) in THF (16 mL) was added triethylamine (0.91 mL, 6.5 mmol), and the resulting mixture was stirred at room temperature for 16 h. The resulting solid was filtered off, and the filtrate was concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 1:4 EtOAc:hexanes as the eluent to give the title compound as a colorless solid (0.52 g, 44%).

Part B. Preparation of 2-(2,4-dimethoxybenzyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one

The product from Part A (100 mg, 0.276 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound as an oil (107 mg, 95%).

Part C. Preparation of 1-(3-tert-butyl-5-(2-(2,4-dimethoxybenzyl)-1-oxoisoindolin-5-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

The product from Part C (44 mg, 0.111 mmol) was subjected to the conditions described for Example 42, Part C to give the title compound (50 mg, 81%).

Part D. Preparation of 1-(3-tert-butyl-4-methoxy-5-(1-oxoisoindolin-5-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

A solution of the product from Part C (48 mg, 0.086 mmol) in CH₂Cl₂ (0.3 ml) and TFA (0.6 ml, 7.79 mmol) was stirred at room temperature for 16 h, and then concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 5% MeOH in CHCl₃ as the eluent to give the title compound as a colorless solid (22 mg, 63%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.41 (d, J=1.84 Hz, 1H) 8.61 (s, 1H) 7.72-7.83 (m, 3H) 7.62-7.69 (m, 1H) 7.29-7.36 (m, 2H) 5.65 (dd, J=8.09, 2.21 Hz, 1H) 4.44 (s, 2H) 3.25 (s, 3H) 1.41 (s, 9H).

Example 45 Preparation of N-(2-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)propan-2-yl)methanesulfonamide (compound IB-L0-2.41)

Part A. Preparation of 6-bromo-1H-indene-3-carbonitrile

To a solution of 5-bromo-2,3-dihydro-1H-inden-1-one (1 g, 4.74 mmol) in anhydrous THF (15 ml) at −10° C. was added 2M lithium diisopropylamide in THF (0.242 ml, 0.483 mmol) dropwise. The resulting mixture was stirred at −10° C. for 15 min before diethylcyanophosphonate (0.791 ml, 5.21 mmol) was added dropwise. Following the addition, the mixture was allowed to warm to room temperature, and was stirred at room temperature for 3 h. The mixture was cooled to −78° C. and borontrifluoride diethyl etherate (1.196 ml, 9.52 mmol) was added dropwise. Following the addition, the mixture was stirred at −78° C. for 1 h and was then allowed to warm to room temperature and was stirred at room temperature for 16 h. The mixture was concentrated in vacuo, and the residue was partitioned between EtOAc (50 mL) and H₂O (2×50 mL). The organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo, and the crude product was purified by column chromatography on silica gel using 9:1 EtOAc:hexanes as the eluent. The title compound was obtained as an tan solid (0.72 g, 69%).

Part B. Preparation of N-(2-(6-bromo-1H-inden-3-yl)propan-2-yl)methanesulfonamide

Anhydrous cerium(III) chloride (0.224 g, 0.909 mmol) was flame dried under vacuum and placed under dry N₂. Anhydrous THF (1.5 ml) was added, and the resulting mixture was stirred under N₂ at 45° C. for 48 h. The mixture was cooled to room temperature, and the product from Part A (0.1 g, 0.454 mmol) was added. The resulting mixture was cooled to −78° C., and a 1.5M solution of methyl-lithium lithium bromide complex (0.757 ml, 1.136 mmol) in Et₂O was added dropwise over 15 min. Following the addition, the mixture was allowed to warm to −20° C. and was stirred for 24 h. Concentrated aq. NH₄OH (0.3 mL) was added dropwise, and the mixture was allowed to warm to room temperature, was stirred for 30 min, and was then filtered and washed with THF (2×5 mL). The filtrate was concentrated in vacuo, and the crude product was purified by column chromatography on silica gel using 5% MeOH in CH₂Cl₂ as the eluent to give a solid (23 mg, 20%). To a solution of this solid (23 mg, 0.091 mmol) in CH₂Cl₂ (1 mL) was added methanesulfonyl chloride (0.011 mL, 0.137 mmol). The mixture was cooled to 0° C. and diisopropylethylamine (0.024 ml, 0.137 mmol) was added dropwise. The resulting mixture was stirred at room temperature for 90 min, and was then partitioned between 0.1 N aq. HCl (2 mL) and CH₂Cl₂ (3×2 mL). The combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo, and the crude product was purified by column chromatography on silica gel to give the title compound (17 mg, 56%).

Part C. Preparation of N-(2-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-inden-3-yl)propan-2-yl)methanesulfonamide

The product from Part C (50 mg, 0.151 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound as a colorless solid (37 mg, 65%).

Part D. Preparation of N-(2-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)propan-2-yl)methanesulfonamide

The product from Part C (35 mg, 0.093 mmol) was subjected to the conditions described for Example 42, Part C to give the title compound as a colorless solid (41 mg, 84%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (s, 1H) 7.94 (d, J=8.09 Hz, 1H) 7.78 (d, J=8.09 Hz, 1H) 7.65 (d, J=1.50 Hz, 1H) 7.56 (s, 1H) 7.48 (dd, J=8.09, 1.47 Hz, 1H) 7.27 (s, 2H) 6.48 (s, 1H) 5.63 (d, J=8.09 Hz, 1H) 3.43 (s, 2H) 3.25 (s, 3H) 2.63 (s, 3H) 1.68 (s, 6H) 1.41 (s, 9H).

Example 46 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-3-yl)methyl)methanesulfonamide (compound IB-L0-2.11)

Part A. Preparation of ethyl 6-bromobenzo[b]thiophene-2-carboxylate

A solution of ethyl thioglycolate (0.65 g, 5.42 mmol), 4-bromo-2-fluorobenzaldehyde (1.0 g, 4.93 mmol) and triethylamine (1.25 mL, 12.3 mmol) in DMSO (5 mL) was heated at 75° C. for 2 h. The mixture was partitioned between H₂O (50 mL) and CH₂Cl₂ (2×50 mL), and the combined organic layers were dried over Na₂SO₄. The drying agent was filtered off, and the solvent was removed in vacuo to give the title compound as an oil (1.29 g, 92%).

Part B. Preparation of 6-bromobenzo[b]thiophene-2-carboxylic acid

To a solution of the product from Part A (1.21 g, 4.24 mmol) in THF (10 mL) was added a solution of LiOH (0.305 g, 12.73 mmol) in H₂O (4 mL) and the resulting mixture was stirred at 40° C. for 2 h. The mixture was partitioned between H₂O (50 mL) and CH₂Cl₂ (50 mL). The aqueous layer was adjusted to pH=2 using 1N HCl, and extracted with CH₂Cl₂ (2×50 mL). The combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo to give the title compound as an oil (1.04 g, 95%).

Part C. Preparation of 6-bromobenzo[b]thiophene

The product from Part B (0.70 g, 2.73 mmol) and DBU (1.35 mL, 8.94 mmol) were combined in DMA (6 mL) in a sealed tube and heated at 200° C. in a microwave reactor for 70 min. The resulting dark solution was diluted with 1 M HCl (20 mL) and extracted with CH₂Cl₂ (2×20 mL). The combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo, and the crude product was purified by column chromatography on silica gel using CH₂Cl₂ as the eluent to give the title compound as an oil (0.484 g 83%).

Part D. Preparation of 6-bromo-3-(chloromethyl)benzo[b]thiophene

To a solution of the product from Part C (0.484 g, 2.27 mmol) in benzene (0.20 mL) was added 37% aq. formaldehyde solution (1 mL) and concentrated HCl (1 mL). The resulting mixture was heated at 70° C. for 1 h. while HCl gas was bubbled through the mixture. The mixture was partitioned between H₂O (20 mL) and CH₂Cl₂ (2×20 mL), and the combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using CH₂Cl₂ to give the title compound as a waxy solid (0.49 g, 82%).

Part E. Preparation of N-((6-bromobenzo[b]thiophen-3-yl)methyl)-N-(2,4-dimethoxybenzyl) methanesulfonamide

To a solution of the product form Part D (275 mg, 1.05 mmol) and N-(2,4-dimethoxybenzyl)-methanesulfonamide (284 mg, 1.15 mmol) in DMA (6 mL) was added K₂CO₃ (160 mg, 1.15 mmol), and the mixture was stirred at room temperature for 3 h. The mixture was partitioned between H₂O (20 mL) and Et₂O (2×20 mL), and the combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 2% EtOAc in CH₂Cl₂ as the eluent to give the title compound as a waxy solid (316 mg, 64%).

Part F. Preparation of N-(2,4-dimethoxybenzyl)-N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]thiophen-3-yl)methyl)methanesulfonamide

The product from Part E (300 mg, 0.64 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound as a waxy solid (248 mg, 75%).

Part G. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-3-yl)methyl)-N-(2,4-dimethoxybenzyl)methanesulfonamide

The product from Part F (214 mg, 0.414 mmol) was subjected to the conditions described for Example 42, Part C to give the title compound as a light yellow solid (238 mg, 87%).

Part H. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-3-yl)methyl)methanesulfonamide

To a solution of the product from Part G (230 mg, 0.34 mmol) in CH₂Cl₂ (4 mL) was added trifluoroacetic acid (0.5 mL), and the mixture was stirred at room temperature for 30 min. The solution was diluted with CH₂Cl₂ (10 mL) and extracted with saturated aq. NaHCO₃ (2×10 mL). The organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo, and the crude product was purified by column chromatography on silica gel eluting with 3% MeOH in CH₂Cl₂ to give the title compound as an off-white solid (149 mg, 84%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.41 (s, 1H) 8.16 (d, J=1.10 Hz, 1H) 8.02 (d, J=8.46 Hz, 1H) 7.79 (d, J=7.72 Hz, 1H) 7.71 (s, 1H) 7.60-7.66 (m, 2H) 7.29-7.38 (m, 2H) 5.65 (d, J=7.72 Hz, 1H) 4.44 (d, J=5.88 Hz, 2H) 3.24 (s, 3H) 2.95 (s, 3H) 1.42 (s, 9H).

Example 47 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1,2,3,4-tetrahydroisoquinolin-6-yl)methanesulfonamide (compound IB-L0-2.19)

Part A. Preparation of 1-(3-amino-5-tert-butyl-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

To a solution of the product from Example 5, Part F (170 mg, 0.534 mmol) and triethylamine (223 uL, 1.6 mmol) in THF (5 mL) was added diphenylphosphorylazide (173 uL, 0.80 mmol). The resulting mixture was stirred at room temperature for 1 h, and was then stirred at 45° C. for 1 h. Water (280 uL) was added, and the resulting mixture was stirred at 50° C. for 1 h, and then stirred at room temperature for 16 h. The solution was diluted with H₂O (10 mL), and the resulting solid was filtered off. The solid was suspended in 1M aq. HCl and filtered to give the amine product as the HCl salt. This salt was suspended in aq. NaHCO₃ (20 mL) and extracted with EtOAc (2×20 mL). The combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo to give the title compound as a colorless solid (55 mg, 36%).

Part B. Preparation of l-(3-tert-butyl-4-methoxy-5-(6-nitro-3,4-dihydroisoquinolin-2(1H)-yl)phenyl)pyrimidine-2,4(1H,3H)-dione

A solution of the product from Part A (100 mg, 0.28 mmol) and 2-(2-(methylsulfonyloxy)-ethyl)-4-nitrobenzyl methanesulfonate (196 mg, 0.68 mmol) were in anhydrous DMA (4 mL) was stirred at 80° C. for 18 h. The cooled mixture was partitioned between H₂O (20 mL) and EtOAc (2×20 mL), and the combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The residue was suspended in CH₂Cl₂ and filtered to remove unreacted aniline starting material. The filtrate was concentrated in vacuo, and the crude product was purified by column chromatography on silica gel eluting with 1% MeOH in CH₂Cl₂ to give the title compound as a light yellow solid (39.3 mg, 31%).

Part C. Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1,2,3,4-tetrahydroisoquinolin-6-yl)methanesulfonamide

To a solution of the product from Part B (35 mg, 0.078 mmol) in THF (0.5 mL), MeOH (0.5 mL) and H₂O (0.25 mL) was added Fe powder (17.4 mg, 0.41 mmol) and NH₄Cl (6.2 mg, 0.12 mmol, and the resulting mixture was stirred at 70° C. for 1 h. The hot mixture was filtered through celite and rinsed with THF and MeOH. The filtrate was concentrated and dried in vacuo to give a solid. To a solution of the solid (32 mg, 0.076 mmol) and pyridine (26 uL, 0.32 mmol) in CH₂Cl₂ (1.5 mL) was added methanesulfonyl chloride (7.7 uL, 0.099 mmol). The mixture was stirred at room temperature for 1 h then concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with 5% MeOH in CH₂Cl₂ to give the title compound as a light yellow solid (7 mg, 19%). ¹H NMR (300 MHz, DMSO-d₆) δ 7.71 (d, J=8.09 Hz, 1H) 7.14-7.21 (m, 1H) 7.05-7.12 (m, 3H) 6.98 (d, J=2.57 Hz, 1H) 5.65 (d, J=7.72 Hz, 1H) 4.18 (s, 2H) 3.86 (s, 3H) 3.03 (t, J=4.23 Hz, 2H) 2.99 (s, 3H) 1.38 (s, 9H).

Example 48 Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)isoindolin-5-yl)methanesulfonamide (compound IB-L0-2.79)

Part A. Preparation of (4-nitro-1,2-phenylene)bis(methylene)dimethanesulfonate

To a solution of 4-nitrophthalic acid (500 mg, 2.37 mmol) in THF (24 mL) at room temperature was added a 1M solution of BH₃.THF complex (9.95 mL, 9.95 mmol) dropwise. This solution was stirred at 65° C. for 1 h, and then allowed to cool to room temperature. To the mixture was added MeOH (1 mL), and the mixture was stirred for 30 min and concentrated in vacuo. The residue was partitioned between 1M aq. HCl (20 mL) and EtOAc (2×20 mL), and the combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with 3% MeOH in CH₂Cl₂ to give an oil (253 mg, 58%). To a solution of the oil (250 mg, 2.37 mmol) and triethylamine (438 uL, 3.14 mmol) in anhydrous CH₂Cl₂ (30 mL) at 0° C. was added methanesulfonyl chloride (234 uL, 3.0 mmol) dropwise. The solution was stirred at room temperature for 18 h, and was partitioned between 1M aq. HCl (20 mL) and CH₂Cl₂ (2×20 mL). The combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with CH₂Cl₂ to give the title compound (150 mg, 32%).

Part B. Preparation of 1-(3-tert-butyl-4-methoxy-5-(5-nitroisoindolin-2-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

To a solution of the product of Part A (110 mg, 0.324 mmol) and the product of Example 47, Part A (113 mg, 0.389 mmol) in anhydrous 1,4-dioxane (4 mL) was added sodium bicarbonate (60 mg, 0.71 mmol) and diisopropylethylamine (142 uL, 0.81 mmol) and the resulting mixture was stirred at 95° C. for 16 h. The mixture was partitioned between 0.5M aq. HCl (10 mL) and CH₂Cl₂ (2×10 mL), and the combined organic layers were dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with 1% MeOH in CH₂Cl₂ to give the title compound as a light yellow solid (110 mg, 78%).

Part C. Preparation of N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)isoindolin-5-yl)methanesulfonamide

The product from Part B (100 mg, 0.25 mmol) was subjected to the conditions described for Example 47, Part C to give the title compound as an off-white solid (53 mg, 45%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.37 (s, 1H) 9.70 (s, 1H) 7.71 (d, J=7.72 Hz, 1H) 7.34 (d, J=8.09 Hz, 1H) 7.23 (d, J=1.84 Hz, 1H) 7.13 (dd, J=8.09, 1.84 Hz, 1H) 6.98 (d, J=2.57 Hz, 1H) 6.81 (d, J=2.21 Hz, 1H) 5.62 (d, J=7.72 Hz, 1H) 4.52 (s, 2H) 4.50 (s, 2H) 3.63 (s, 3H) 2.98 (s, 3H) 1.38 (s, 9H).

Example 49 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)methanesulfonamide (compound IB-L0-2.13)

Part A. Preparation of 5-bromo-1-(trimethylsilyloxy)-2,3-dihydro-1H-indene-1-carbonitrile

To a solution of 5-bromo-2,3-dihydro-1H-inden-1-one (10.0 g, 47.4 mmol) and N-methyl-morpholine N-oxide (1.67 g, 14.21 mmol) in CH₂Cl₂ (50 ml) was added trimethylsilylcyanide (7.05 g, 71.1 mmol), and the resultant solution was stirred at room temperature for 72 h, and then concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 5% EtOAc in hexanes as the eluent to give the title compound as a colorless liquid (12.65 g, 86%).

Part B. Preparation of 1-(aminomethyl)-5-bromo-2,3-dihydro-1H-inden-1-ol

To a solution of the product from Part A (18.44 g, 59.4 mmol) in anhydrous Et₂O (250 mL) under N₂ gas at 0° C. was added a 1M solution of LiAlH₄ in Et₂O (62.4 mL, 62.4 mmol) dropwise over 1 h. Following the addition, the mixture was allowed to warm to rt and was stirred at room temperature for 2 h. The mixture was cooled in an ice bath while H₂O (4.3 mL) was added dropwise, followed by the addition of 15% aq. NH₄OH (4.3 mL), and then H₂O (13 mL). The mixture was stirred at room temperature for 15 min, and then filtered through celite and rinsed with EtOAc. The filtrate was concentrated in vacuo, and the residue was suspended in Et₂O (40 mL) to give a precipitate that was filtered and dried to give the title compound as a colorless solid (10.0 g, 70%).

Part C. Preparation of (6-bromo-1H-inden-3-yl)methanamine hydrochloride salt

To a solution of the product from Part B (10.0 g, 41.3 mmol) in MeOH (100 mL) was added 6N aq. HCl (125 mL) and the mixture was stirred at 70° C. for 3 h and then allowed to cool to room temperature. MeOH was removed in vacuo to give a precipitate that was collected by filtration, washed with H₂O, and dried in vacuo to provide the title compound as a colorless solid (9.89 g, 92%).

Part D. Preparation of N-((6-bromo-1H-inden-3-yl)methyl)methanesulfonamide

To a suspension of the product from Part C (6.46 g, 24.8 mmol) in anhydrous CH₂Cl₂ (260 mL) was added methanesulfonyl chloride (3.86 mL, 49.6 mmol) and diisopropylethylamine (13.0 mL, 74.4 mmol), and the resulting mixture was stirred at room temperature for 10 h. The solution was washed with 1N aq. HCl (2×300 mL), and the organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo. The residue was suspended in Et₂O (100 mL) to give a precipitate that was collected by filtration and dried to give the title compound as a colorless solid (6.25 g, 83%).

Part E. Preparation of N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-inden-3-yl)methyl)methanesulfonamide

A solution of the product from Part D (2.0 g, 6.62 mmol), bis(pinacolato)diboron (1.85 g, 7.28 mmol), potassium acetate (1.95 g, 19.86 mmol) and 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.27 g, 0.331 mmol) in anhydrous 1,4-dioxane (80 mL) under N₂ was stirred at 95° C. for 8 h. The cooled mixture was filtered through celite, washed with EtOAc (2×20 mL) and then concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 1:2 EtOAc:hexanes as the eluent to give the title compound as a colorless oil (2.02 g, 87%).

Part F. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)methanesulfonamide

A mixture of the product from Part E (3.14 g, 8.99 mmol), the product from Example C (3.78 g, 9.44 mmol), tripotassium phosphate (3.82, 17.98 mmol), 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phospha-6-phenyl-adamantane (Cytec [97739-46-3]) (105 mg, 0.36 mmol), and tris(dibenzylidineacetone)-dipalladium(0) (165 mg, 0.18 mmol) was placed under N₂ gas. To the mixture was added, via canula, a mixture of THF (45 mL) and H₂O (15 mL) that had been degassed by bubbling Ar gas for 10 min. The resulting mixture was further degassed by bubbling with Ar for an additional 15 min. The mixture was stirred at 50° C. for 1.5 h while Ar was continuously bubbled through the solution. Additional tris(dibenzyl idineacetone)dipalladium(0) (55 mg, 0.6 mmol) in THF (2 mL) was added, and the mixture was stirred at 50° C. for 1 h. The mixture was allowed to cool to rt, and was partitioned between CH₂Cl₂ (300 ml) and 1N aq. HCl (150 mL). To the orange organic layer was added 3-mercaptopropyl-functionalized silica gel (10 g, Aldrich) and mgSO₄, and the mixture was stirred at room temperature for 16 h, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 3:1 EtOAc:hexanes as the eluent to give the title compound as a colorless solid (2.7 g, 61%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (s, 1H), 7.78 (d, J=7.4 Hz, 1H), 7.66 (s, 1H), 7.60 (d, J=7.7 Hz, 1H), 7.50 (m, 2H), 7.25 (m, 2H), 6.56 (m, 1H), 5.64 (dd, J=2.2, 7.7 Hz, 1H), 4.18 (d, J=5.1 Hz, 2H), 3.46 (s, 2H), 3.25 (s, 3H), 2.96 (s, 3H), 1.41 (s, 9H).

Example 50 Preparation of N′-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methanesulfonohydrazide (compound IB-L0-2.31)

To a solution of the product from Example 4, Part C (100 mg, 0.201 mmol) was in THF (2 mL) and MeOH (2 mL) was added 2 drops of 10% HCl in MeOH, followed by sodium cyanoborohydride (19 mg, 0.302 mmol). The mixture was adjusted to pH 4 with the addition of 10% HCl in MeOH, and was then stirred at room temperature for 1 h. The resulting mixture was partitioned between saturated aq. sodium bicarbonate (5 mL) and CH₂Cl₂ (20 mL), and the organic layer was dried over Na₂SO₄, filtered and concentrated. The crude product was purified by column chromatography on silica gel using 3% MeOH in CH₂Cl₂ as the eluent to provide the title compound as a colorless solid (58 mg, 58%). ¹H NMR (300 MHz, DMSO-d6) δ 11.39 (s, 1H), 8.18 (d, J=3.7 Hz, 1H), 7.77 (d, J=7.7 Hz, 1H), 7.51 (d, J=8.1 Hz, 1H), 7.38 (m, 2H), 7.27 (d, J=2.6 Hz, 1H), 7.21 (d, J=2.9 Hz, 1H), 5.63 (d, J=7.7 Hz, 1H), 5.25 (m, 1H), 4.39 (m, 1H), 3.27 (s, 3H), 2.98 (m, 1H), 2.83 (s, 3H), 2.78 (m, 1H), 2.22 (m, 1H), 2.07 (m, 1H), 1.40 (s, 9H).

Example 51 Preparation of 1-(3-tert-butyl-5-(1-hydroxy-2,3-dihydro-1H-inden-5-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.36)

To a solution of the product from Example 4, Part B (150 mg, 0.371 mmol) in MeOH (3 mL) and CH₂Cl₂ (3 mL) was added sodium borohydride (28 mg, 0.742 mmol), and the mixture was stirred at room temperature for 1 h. The mixture was partitioned between 1N aq. HCl (10 mL) and CH₂Cl₂ (20 mL), and the organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 5% MeOH in CH₂Cl₂ as the eluent to provide the title compound as a colorless solid (90 mg, 60%). ¹H NMR (300 MHz, DMSO-d6): δ 11.39 (s, 1H), 7.44 (d, J=4.0 Hz, 1H), 7.40 (m, 2H), 7.21 (d, J=2.6 Hz, 1H), 7.26 (d, J=2.6 Hz, 1H), 5.63 (d, J=8.1 Hz, 1H), 5.29 (d, J=5.9 Hz, 1H), 5.09 (m, 1H), 3.26 (s, 3H), 2.97 (m, 1H), 2.79 (m, 1H), 2.38 (m, 1H), 1.83 (m, 1H), 1.40 (s, 9H).

Example 52 Preparation of 1-(3-tert-butyl-5-(2-(2,5-dimethyl-1H-pyrrol-1-yl)benzo[d]thiazol-6-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.47)

Part A. Preparation of 6-bromo-2-(2,5-dimethyl-1H-pyrrol-1-yl)benzo[d]thiazole

A solution 6-bromobenzo[d]thiazol-2-amine (5.75 g, 25.1 mmol), hexane-2,5-dione (2.95 mL, 25.1 mmol), and PPTS (0.95 g, 3.76 mmol) in benzene (100 ml) was refluxed for 16 h while water was removed with a Dean-Stark trap. The cooled mixture was poured into EtOAc (100 mL) and extracted with saturated aq. NaHCO₃ (2×100 mL) and brine. The organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 9:1 EtOAc:hexanes as the eluent to give the title compound as an orange oil (6.46 g, 84%).

Part B. Preparation of 2-(2,5-dimethyl-1H-pyrrol-1-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]thiazole

A mixture of the product from Part A (3.24 g, 10.54 mmol), bis(pinacolato)diboron (4.01 g, 15.81 mmol), bis(di-tert-butyl(hydroxy)phosphino)palladium(II) dichloride (0.264 g, 0.527 mmol), and potassium acetate (3.10 g, 31.6 mmol) in anhydrous toluene (25 mL) was degassed by bubbling with N₂ gas for 15 min, and then heated at reflux under N₂ for 72 h. The cooled mixture was filtered through celite and washed with EtOAc, and the filtrate was concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 9:1 EtOAc:hexanes as the eluent to give the title compound (2.77 g, 74%).

Part C. Preparation of 1-(3-tert-butyl-5-(2-(2,5-dimethyl-1H-pyrrol-1-yl)benzo[d]thiazol-6-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

The product from Part B (405 mg, 1.14 mmol) was subjected to the conditions described for Example 42, Part C to give the title compound (430 mg, 68%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.43 (d, J=2.21 Hz, 1H) 8.32 (d, J=1.47 Hz, 1H) 8.12 (d, J=8.46 Hz, 1H) 7.80 (d, J=7.72 Hz, 1H) 7.76 (dd, J=8.46, 1.84 Hz, 1H) 7.35 (q, J=2.57 Hz, 2H) 5.97 (s, 2H) 5.66 (dd, J=7.72, 2.21 Hz, 1H) 3.30 (s, 3H) 2.30 (s, 6H) 1.43 (s, 9H).

Example 53 Preparation of 1-(3-(2-aminobenzo[d]thiazol-6-yl)-5-tert-butyl-4-methoxy-phenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.27)

To a solution of the product from Example 52 (4.0 g, 8.0 mmol) in trifluoroacetic acid (50 mL) was added a few drops of H₂O, and the resulting mixture was stirred at 80° C. for 2.5 h, and then concentrated in vacuo. A solution of the residue in MeOH was neutralized using conc. NH₄OH, concentrated in vacuo, and the crude product was purified by column chromatography on silica gel using 9:1 CH₂Cl₂:MeOH as the eluent to give the title compound (3.3 g, 98%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (s, 1H) 7.81 (s, 1H) 7.77 (d, J=8.09 Hz, 1H) 7.57 (s, 1H) 7.40 (s, 1H) 7.33-7.38 (m, 1H) 7.25 (s, 1H) 5.60-5.69 (m, 1H) 3.26 (s, 3H) 1.40 (s, 9H).

Example 54 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]thiazol-2-yl)methanesulfonamide (compound IB-L0-2.28)

To a solution of the product from Example 53 (0.35 g, 0.83 mmol) in anhydrous CH₂Cl₂ (50 mL) was added methanesulfonyl chloride (194 μL, 2.49 mmol) and pyridine (1.34 mL, 16.6 mmol). The resulting mixture was stirred at room temperature for 16 h and concentrated in vacuo. The crude product was purified by C-18 reverse-phase HPLC using an acetonitrile:H₂0 (0.1% TFA) gradient to give the title compound (19 mg, 4%). ¹H NMR (300 MHz, DMSO-d₆) δ 13.09 (s, 1H) 11.41 (d, J=1.84 Hz, 1H) 7.96 (d, J=1.47 Hz, 1H) 7.77 (d, J=8.09 Hz, 1H) 7.57 (dd, 1H) 7.42 (d, J=8.09 Hz, 1H) 7.25-7.32 (m, 2H) 5.64 (dd, J=8.09, 2.21 Hz, 1H) 3.25 (s, 3H) 3.02 (s, 3H) 1.40 (s, 9H).

Example 55 Preparation of 1-(3-(benzo[d]thiazol-6-yl)-5-tert-butyl-4-methoxyphenyl) pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.33)

To a solution of the product from Example 53 (30 mg, 0.071 mmol) in anhydrous 1,4-dioxane (3 mL) under N₂ was added isoamyl nitrite (19 μL, 0.142 mmol). The resulting mixture was stirred at reflux for 1 h, and concentrated in vacuo. The crude product was purified by C-18 reverse-phase HPLC using an acetonitrile:H₂O (0.1% TFA) gradient to give the title compound (14 mg, 48%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.42 (d, J=1.84 Hz, 1H) 9.44 (s, 1H) 8.34 (d, J=1.47 Hz, 1H) 8.19 (d, J=8.46 Hz, 1H) 7.79 (d, J=7.72 Hz, 1H) 7.73 (dd, J=8.46, 1.84 Hz, 1H) 7.32-7.37 (m, 2H) 5.65 (dd, J=7.91, 2.39 Hz, 1H) 3.24 (s, 3H) 1.42 (s, 9H).

Example 56 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[d]thiazol-2-yl)acetamide (compound IB-L0-2.49)

A mixture of the product from Example 53 (30 mg, 0.071 mmol) and acetic anhydride (3 mL) was stirred at 100° C. for 2 h, and then allowed to cool to room temperature. The resulting solid was collected by filtration, washed with H₂O, and dried to give the title compound as an off-white solid (29 mg, 88%). ¹H NMR (300 MHz, DMSO-d₆) δ 12.42 (s, 1H) 11.41 (d, J=2.21 Hz, 1H) 8.12 (d, J=1.47 Hz, 1H) 7.82 (d, J=8.46 Hz, 1H) 7.78 (d, J=8.09 Hz, 1H) 7.61 (dd, J=8.46, 1.84 Hz, 1H) 7.31 (q, J=2.70 Hz, 2H) 5.64 (dd, J=8.09, 2.21 Hz, 1H) 3.24 (s, 3H) 2.22 (s, 3H) 1.41 (s, 9H).

Example 57 Preparation of 1-(3-tert-butyl-4-methoxy-5-(2-(propylamino)benzo[d]thiazol-6-yl)phenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.46)

Part A. Preparation of 1-(3-tert-butyl-5-(2-chlorobenzo[d]thiazol-6-yl)-4-methoxyphenyl) pyrimidine-2,4(1H,3H)-dione

To a mixture of the product from Example 53 (50 mg, 0.118 mmol) and copper(II) chloride (24 mg, 0.178 mmol) in acetonitrile (3 mL) at 0° C. was added tert-butyl nitrite (21 μL, 0.178 mmol). The mixture was stirred at 0° C. for 1 h, and then warmed to 65° C. and stirred for 2 h. The mixture was concentrated in vacuo and purified by column chromatography on silica gel using 5% MeOH in CH₂Cl₂ to give the title compound as an off-white solid (43 mg, 82%).

Part B. Preparation of 1-(3-tert-butyl-4-methoxy-5-(2-(propylamino)benzo[d]thiazol-6-yl)phenyl)pyrimidine-2,4(1H,3H)-dione

A mixture of the product from Part A (50 mg, 0.11 mmol), 1-aminopropane (9 μL, 0.11 mmol), and K₂CO₃ (15.6 mg, 0.11 mmol) in anhydrous DMF (5 mL) was stirred at 100° C. for 24 h. The mixture was concentrated in vacuo and purified by column chromatography on silica gel using 2% MeOH in EtOAc as the eluent to give the title compound as an off-white solid (21 mg, 40%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.39 (d, J=1.84 Hz, 1H) 8.12 (t, J=5.52 Hz, 1H) 7.82 (d, J=1.47 Hz, 1H) 7.77 (d, J=7.72 Hz, 1H) 7.44 (t, J=9.01 Hz, 1H) 7.37-7.41 (m, 1H) 7.25 (s, 2H) 5.63 (dd, J=7.91, 2.02 Hz, 1H) 3.33-3.38 (m, 2H) 3.26 (s, 3H) 1.56-1.69 (m, 2H) 1.40 (s, 9H) 0.94 (t, J=7.35 Hz, 3H).

Example 58 Preparation of 1-(3-tert-butyl-4-methoxy-5-(3-methylbenzofuran-6-yl)phenyl)-pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.42)

Part A. Preparation of methyl 2-(2-acetyl-5-bromophenoxy)acetate

A solution of 1-(4-bromo-2-hydroxyphenyl)ethanone (1.35 g, 6.28 mmol) in anhydrous DMF (16 mL) was treated in several portions with sodium hydride (377 mg of 60% in oil, 226 mg, 9.42 mmol) followed by stirring at room temperature for 30 min. The mixture was then treated with methyl bromo-acetate (871 μL, 1.45 g, 9.48 mmol) dropwise (solution became warm after addition was complete) followed by stirring at room temperature for 18 h. The mixture was diluted with ethyl acetate and extracted with water (4×) and saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded a nearly colorless solid, which was purified by column chromatography on silica gel, eluting with 20-100% ethyl acetate in hexanes. These procedures afforded the title compound as a colorless solid (1.47 g, 82%).

Part B. Preparation of 2-(2-acetyl-5-bromophenoxy)acetic acid

A solution of the product from Part A (1.47 g, 5.12 mmol) in tetrahydrofuran (26 mL) was treated with 1.0N sodium hydroxide solution (6.7 mL, 6.7 mmol) followed by stirring at room temperature for 3 h, at which point the reaction was complete. The mixture was concentrated in vacuo to remove tetrahydrofuran and then was diluted with water and cooled to 0° C. The mixture was acidified to pH 3 by addition of 1N hydrochloric acid solution, and then the product extracted with ethyl acetate. The organic layer was extracted with saturated sodium chloride solution and dried (Na₂SO₄). Concentration in vacuo afforded the title compound as a colorless solid (1.36 g, 97%).

Part C. Preparation of 6-bromo-3-methylbenzofuran

A solution of the product from Part B (500 mg, 1.83 mmol) in acetic anhydride (9.2 mL) was treated with sodium acetate (300 mg, 3.66 mmol) followed by warming at reflux for 18 h. The mixture was cooled to room temperature and diluted with toluene and concentrated in vacuo to azeotropically remove acetic anhydride. This process was repeated 3×. The mixture was then diluted with ethyl acetate and stirred with saturated sodium bicarbonate solution for 1 h. The layers were separated and the organic layer was extracted with saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded amber oil, which was purified by column chromatography on silica gel, eluting with 8-50% ethyl acetate in hexanes. These procedures afforded the title compound as a colorless liquid (316 mg, 82%).

Part D. Preparation of 4,4,5,5-tetramethyl-2-(3-methylbenzofuran-6-yl)-1,3,2-dioxaborolane

In a microwave tube, a mixture of the product from Part C (303 mg, 1.44 mmol), bis(pinacolato)diboron (401 mg, 1.58 mmol) and potassium acetate (423 mg, 4.31 mmol) in anhydrous dioxane (5 mL) was degassed by nitrogen sparge for 15 min. The mixture was treated with 1,1′-bis-(diphenylphosphino)ferrocene palladium (II) chloride dichloromethane complex (24 mg, 0.029 mmol) followed by degassing for another 5 min. The microwave tube was sealed and the mixture was warmed at 90° C. for 18 h. The mixture was cooled and diluted with ethyl acetate and extracted with water and saturated sodium chloride solution. The organic layer was dried (Na₂SO₄) and stirred with (3-mercaptopropyl) silica gel for 1 h. The mixture was filtered and concentrated in vacuo to afford a brown semisolid, which was purified by column chromatography on silica gel, eluting with 8-40% ethyl acetate in hexanes. These procedures afforded the title compound as colorless oil, which slowly solidified upon standing (307 mg, 83%).

Part E. Preparation of 1-(3-tert-butyl-4-methoxy-5-(3-methylbenzofuran-6-yl)phenyl)-pyrimidine-2,4(1H,3H)-dione

In a microwave tube, a solution of the product from Part D (307 mg, 1.19 mmol), the product from Example C (414 mg, 1.03 mmol), 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phospha-6-phenyl-adamantane (Cytec [97739-46-3]) (15 mg, 0.052 mmol), and tribasic potassium phosphate (439 mg, 2.07 mmol) in 3:1 tetrahydrofuran-water (8 mL) was degassed by nitrogen sparge for 20 min. The mixture was treated with tris(dibenzylideneacetone)dipalladium (0) (12 mg, 0.012 mmol) followed by degassing for another 10 min. During this period, the solution turned from an initially deep maroon color to a greenish brown color. The microwave tube was sealed and the solution warmed at 50° C. for 56 h. The solution was cooled and diluted with ethyl acetate and acidified with 1M citric acid solution. The organic layer was extracted with saturated sodium chloride solution, dried (Na₂SO₄), and then stirred with (3-mercaptopropyl) silica gel for 1 h. After filtration and concentration in vacuo, the residue obtained was purified by column chromatography on silica gel, eluting with 4-20% acetone in dichloromethane, followed by a second column chromatography on silica gel, eluting with 20-100% ethyl acetate in hexanes. These procedures afforded the title compound as a colorless solid (355 mg). ¹H NMR (300 MHz, DMSO-d₆): δ 11.40 (d, J=1.84 Hz, 1H) 7.74-7.92 (m, 2H) 7.58-7.76 (m, 2H) 7.46 (dd, J=8.09, 1.47 Hz, 1H) 7.30 (q, J=2.82 Hz, 2H) 5.64 (dd, J=8.09, 2.21 Hz, 1H) 3.22 (s, 3H) 2.25 (s, 3H) 1.41 (s, 9H).

Example 59 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl) 2-methoxyphenyl)benzofuran-3-yl)methyl)methanesulfonamide (compound IB-L0-2.18)

Part A. Preparation of 6-bromo-3-(bromomethyl)benzofuran

A solution of the product from Example 58, Part C (1.0 g, 4.74 mmol) and dibenzoyl peroxide (287 mg, 1.19 mmol) in chlorobenzene (24 mL) at reflux was treated in four portions with N-bromosuccinimide (843 mg, 4.74 mmol) over 30 min. The mixture was then stirred at reflux for 2 h. The mixture was cooled, filtered and concentrated and purified by column chromatography on silica gel, eluting with 7-30% chloroform in hexanes. The procedures afforded the title compound as a light yellow oil (438 mg, 32%).

Part B. Preparation of N-((6-bromobenzofuran-3-yl)methyl)-N-(4-methoxybenzyl)methanesulfonamide

A solution of the product from Part A (515 mg, 1.78 mmol), N-(4-methoxybenzyl)methanesulfonamide (421 mg, 1.95 mmol), and potassium carbonate (260 mg, 1.95 mmol) in anhydrous DMF (8.9 mL) was stirred at 70° C. for 3 h. The mixture was cooled and diluted with ethyl acetate and extracted with water (4×). The organic layer was then extracted with saturated sodium chloride solution and dried (Na₂SO₄). Concentration in vacuo afforded a beige solid. This material was purified by column chromatography on silica gel, eluting with 20-100% ethyl acetate in hexanes. These procedures afforded the title compound as a colorless solid (224 mg, 35%).

Part C. Preparation of N-(4-methoxybenzyl)-N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuran-3-yl)methyl)methanesulfonamide

The product from Part B (186 mg, 0.44 mmol) was subjected to the conditions described for Example 58, Part D to afford the title compound as a colorless solid (177 mg, 86%).

Part D. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzofuran-3-yl)methyl)-N-(4-methoxybenzyl)methanesulfonamide

In a microwave tube, a suspension of the product from Part C (169 mg, 0.36 mmol), the product from Example C (143 mg, 0.36 mmol), and 1.0M sodium carbonate solution (0.5 mL, 0.50 mmol) in 1:1 ethanol-toluene (3 mL) was degassed by nitrogen sparge for 20 min. The solution was treated with 1,1-bis(diphenylphosphino)ferrocene-palladium(II) chloride dichloromethane complex (7 mg, 9 μmol) followed by degassing for another 5 min. The microwave tube was sealed and the mixture heated a 100° C. in the microwave oven for 1 h. The mixture was diluted with ethyl acetate and water, and acidified with 1M citric acid solution. The organic layer was extracted with saturated sodium chloride solution, dried (Na₂SO₄), and allowed to stand overnight over (3-mercaptopropyl) silica gel. Filtration and concentration in vacuo afforded an off-white foam which was purified by column chromatography on silica gel, eluting with 5-30% ethyl acetate in dichloromethane. The procedures afforded the title compound as a colorless solid (96 mg, 43%).

Part E. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzofuran-3-yl)methyl)methanesulfonamide

A solution of the product from Part D (88 mg, 0.14 mmo) in dichloromethane (1.4 mL) was treated with trifluoroacetic acid (1.4 mL) followed by stirring at room temperature for 18 h, and then stirring at 40° C. for 2 h. The mixture was concentrated in vacuo to afford a dark, purple-brown foam, which was subjected to column chromatography on silica gel, eluting with 5-50% ethyl acetate in methylene chloride to afford an impure material, which was purified by reverse phase chromatography on a C-18 column, eluting with 1% water-TFA/acetonitrile. The procedures afforded the title compound as a solid (3.9 mg). ¹H NMR (300 MHz, DMSO-d₆): δ 11.31-11.48 (m, 1H) 8.01 (s, 1H) 7.68-7.94 (m, 2H) 7.40-7.65 (m, 2H) 7.10-7.38 (m, 2H) 5.65 (dd, J=7.91, 2.02 Hz, 1H) 4.33 (d, J=5.88 Hz, 2H) 3.23 (s, 3H) 2.95 (s, 3H) 1.41 (s, 9H).

Example 60 Preparation of N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-methyl-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.25)

Part A. Preparation of 5-bromo-1-(1,3-dithian-2-yl)-2,3-dihydro-1H-inden-1-ol

A solution of 1,3-dithiane (11.96 g, 99 mmol) in anhydrous tetrahydrofuran (100 mL) at −30° C. was treated dropwise over 10 min with n-butyllithium (2.5M in hexanes, 38.4 mL, 96 mmol) followed by stirring at −15° C. for 2 h. The solution was then treated with a solution of 5-bromo-2,3-dihydro-1H-inden-1-one (15 g, 71.1 mmol) in anhydrous tetrahydrofuran (250 mL) over 1 h, maintaining the temperature between −9° C. and 2° C. The mixture was then allowed to set in the refrigerator at 2-8° C. for 18 h. The solution was concentrated in vacuo to afford a maroon oil, which was treated with 1 N hydrochloric acid solution and extracted with ether. The ether layer was extracted with saturated sodium chloride solution, dried (Na₂SO₄) and concentrated in vacuo to afford an amber oil (23.55 g).

Part B. Preparation of 2-(5-bromo-2,3-dihydro-1H-inden-1-ylidene)-1,3-dithiane

A solution of the product from Part A (23.55 g, 71.1 mmol) in benzene (350 mL) was treated with p-toluenesulfonic acid monohydrate (3.0 g) followed by stirring at reflux for 1 h while removing water by means of a Dean-Stark trap. The mixture was extracted with saturated sodium bicarbonate solution and then with saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded the product as an amber, oil (22.27 g).

Part C. Preparation of 5-bromo-2,3-dihydro-1H-indene-1-carboxylic acid

A solution of the product from Part B (22.27 g, 71.1 mmol) in glacial acetic acid (375 mL) was treated with concentrated hydrochloric acid solution (125 mL) followed by stirring at reflux for 3 h. The mixture was cooled and concentrated in vacuo by azeotroping off the acetic acid and water with toluene (3×). The brown oil obtained was filtered through a plug of 70-230 mesh silica gel in a 2 L sintered glass funnel (volume of silica gel ca. 1800 mL) eluting with dichloromethane to remove non-polar impurities (1,3-propanedithiol, inter alia) and then with ethyl acetate to elute the title compound, which was obtained as a brown solid (9.85 g, 58%).

Part D. Preparation of methyl 5-bromo-2,3-dihydro-1H-indene-1-carboxylate

A suspension of the product from Part C (9.85 g, 40.9 mmol) in methanol (400 mL) was treated with 4 N hydrogen chloride in 1,4-dioxane (125 mL) and the mixture was stirred at reflux for 8 h. The mixture was concentrated in vacuo to afford brown oil, which was purified by column chromatography on silica gel, eluting with 0-30% methyl t-butyl ether in chloroform. These procedures afforded the title compound as an amber oil (7.99 g, 77%).

Part E. Preparation of methyl 5-bromo-1-methyl-2,3-dihydro-1H-indene-1-carboxylate

A solution of the product from Part D (2.03 g, 7.96 mmol) in anhydrous tetrahydrofuran (40 mL) at −78° C. under N₂ was treated dropwise with lithium bis(trimethylsilyl)amide (1.0M in tetrahydrofuran, 9.55 mL, 9.55 mmol) over 10 min. The solution was stirred at −78° C. for 45 min and then treated with methyl iodide (1.5 mL, previously dried by passage through a plug of basic alumina). The mixture was then gradually allowed to warm to rt and was stirred for 18 h. The mixture was quenched by addition of saturated ammonium chloride solution (2 mL). The mixture was concentrated in vacuo to remove tetrahydrofuran and the residue was diluted with ethyl acetate. The mixture was extracted with saturated ammonium chloride solution and with saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded the title compound as an amber oil (2.06 g, 96%).

Part F. Preparation of 5-bromo-1-methyl-2,3-dihydro-1H-indene-1-carboxylic acid

A solution of the product from Part E (2.06 g, 7.65 mmol) and potassium trimethylsilanoate (5.5 g of 90%, 4.91 g, 38.3 mmol) in tetrahydrofuran (40 mL) was stirred at reflux for 3 h. The mixture was cooled and concentrated in vacuo to remove tetrahydrofuran. The maroon residue was dissolved in water (ca. 175 mL) and extracted with methyl t-butyl ether. The aqueous phase was cooled to 0° C. and acidified to pH 3 by addition of concentrated hydrochloric acid solution. The mixture was extracted with ethyl acetate (2×) and then with saturated sodium chloride solution. The solution was dried (Na₂SO₄) and treated with Darco G-60, followed by filtration through celite. The filtrate was concentrated in vacuo to afford the title compound as a light yellow solid (1.93 g, 99%).

Part G. Preparation of 5-bromo-1-methyl-2,3-dihydro-1H-indene-1-carboxamide

A solution of the product from Part F (1.56 g, 6.12 mmol) and DMF (473 μL, 447 mg, 6.12 mmol) in hexanes (100 mL) was treated with oxalyl chloride (1.61 mL, 2.32 g, 18.4 mmol) followed by stirring at room temperature for 1 h. The mixture was treated with celite and then filtered through celite. The filtrate was concentrated in vacuo and dissolved in acetone (75 mL) and cooled to 0° C. The solution was treated with 28% aqueous ammonia solution (75 mL) followed by stirring at 0° C. for 30 min and then warming to room temperature. The mixture was concentrated in vacuo and extracted with ethyl acetate. The organic layer was extracted with saturated sodium chloride solution and dried (Na₂SO₄). Concentration in vacuo afforded the title compound as an oil (1.55 g, 100%).

Part H. Preparation of (5-bromo-1-methyl-2,3-dihydro-1H-inden-1-yl)methanamine hydrochloride

In a flask equipped with a vigreaux column and a short path distillation head, a solution of the product from Part G (1.21 g, 4.76 mmol) in anhydrous tetrahydrofuran (8 mL) was warmed to a gentle reflux and treated dropwise with borane-dimethylsulfide complex (904 μL, 723 mg, 9.52 mmol). The resulting mixture was stirred at reflux for 2 h. The solution was cooled to rt and carefully treated with methanol until bubbling ceased, followed by careful treatment with 4N hydrogen chloride in 1,4-dioxane solution (4 mL). The mixture was then concentrated in vacuo. The colorless solid obtained was triturated with ether and collected by filtration. After drying in a vacuum oven at 50° C. for 2 h, the title compound was obtained as a colorless solid (893 mg, 68%).

Part I. Preparation of tert-butyl (5-bromo-1-methyl-2,3-dihydro-1H-inden-1-yl)methylcarbamate

A suspension of the product from Part H (893 mg, 3.23 mmo) in tetrahydrofuran (16 mL) was treated with di-tert-butyl dicarbonate (846 mg, 3.87 mmol) and saturated sodium bicarbonate solution (7.2 mL, ca. 6.46 mmol) followed by stirring at room temperature for 18 h. The mixture was diluted with ethyl acetate and extracted with water and saturated sodium chloride solution. The solution was dried (Na₂SO₄) and concentrated in vacuo. The residue was purified by flash chromatography, eluting with 5-40% ethyl acetate in hexanes. These procedures afforded the title compound as a colorless solid (1.03 g, 94%).

Part J. Preparation of tert-butyl (1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-yl)methylcarbamate

The product from Part I (1.03 g, 3.03 mmol) was subjected to the conditions described for Example 58, Part D to afford the title compound as a colorless solid (977 mg, 83%).

Part K. Preparation of tert-butyl (5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-methyl-2,3-dihydro-1H-inden-1-yl)methylcarbamate

The product from Part J (965 mg, 2.49 mmol) was subjected to the conditions described for Example 59, Part D to afford the title compound as a colorless solid (618 mg, 47%).

Part L. Preparation of N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-methyl-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide

The product from Part K (446 mg, 0.84 mmol) was dissolved in 4N hydrogen chloride in dioxane solution (12 mL), followed by stirring at room temperature for 18 h. The suspension of colorless solid obtained was then concentrated in vacuo. This material was suspended in dichloromethane (5 mL) and cooled to 0° C., followed by sequential treatment with triethylamine (280 μL, 203 mg, 2.01 mmol) and methanesulfonyl chloride (81 μL, 120 mg, 1.05 mmol). The mixture was stirred at 0° C. for 1 h and then warmed to room temperature and diluted with dichloromethane. The mixture was extracted with 1M citric acid solution and then dried (Na₂SO₄) and concentrated in vacuo. The residue was dissolved in 3:1 tetrahydrofuran-water (8 mL) and treated with potassium carbonate (231 mg, 1.68 mmol) followed by stirring at room temperature for 1 h. The mixture was concentrated in vacuo and the residue diluted with water and then acidified to ca. pH 2 by addition of 1M citric acid. The product was extracted with ethyl acetate and the organic layer was extracted with saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded a colorless solid, which was purified by column chromatography on silica gel, eluting with 30-100% ethyl acetate in hexanes. The procedures afforded the title compound as a colorless solid (184 mg, 43%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.39 (s, 1H) 7.77 (d, J=7.72 Hz, 1H) 7.14-7.48 (m, 5H) 7.06 (t, J=6.62 Hz, 1H) 5.63 (d, J=7.72 Hz, 1H) 3.18-3.33 (m, 3H) 2.96-3.15 (m, 2H) 2.85-3.00 (m, 2H) 2.70-2.87 (m, 3H) 2.10-2.34 (m, 1H) 1.63-1.90 (m, 1H) 1.40 (s, 9H) 1.20-1.34 (m, 3H).

Example 61 Preparation of N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-fluoro-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.12)

Part A. Preparation of 5-(5-bromo-2,3-dihydro-1H-inden-1-ylidene)-2,2,3,3,7,7,8,8-octamethyl-4,6-dioxa-3,7-disilanonane

To a solution of the product from Example 60, Part C (1.2 g, 4.98 mmol) in anhydrous THF (5 mL) was added TBSCl (1.726 g, 11.45 mmol), and the resulting yellow solution was cooled to 0° C. in an ice bath. A 1.0M solution of LiHMDS in THF (11.95 mL, 11.95 mmol) was added dropwise over 5 min, and the resulting dark red solution was stirred at 0° C. for 90 min, and then at room temperature for 6 h. The solvent was removed in vacuo and the oily semi solid residue was treated with pentane (2×35 mL) to precipitate LiCl. The slurry was filtered and the solvent was removed in vacuo to give the title compound as a brown oil (2.3 g).

Part B. Preparation of 5-bromo-1-fluoro-2,3-dihydro-1H-indene-1-carboxylic acid

To a mixture of 1-chloromethyl-4-fluoro-1,1-diazoniabicyclo[2.2.2.]octane bis(tetrafluoro-borate)(Selectfluor, 2.26 g, 6.37 mmol in CH₃CN (20 mL) was added the product from Part A (2.3 g, 4.90 mmol) in CH₃CN (6 mL). The resulting yellow-orange solution was stirred at room temperature overnight. The reaction mixture was poured into 50 mL 1N HCl (aqueous), extracted with EtOAc (2×35 mL). The combined organic extracts are washed with 0.5N NaOH (3×30 mL). The combined aqueous extracts are washed with EtOAc (2×25 mL), then adjusted mixture to pH 1 with 5N HCl (10 mL). The resulting cloudy brown solution was extracted with EtOAc (2×50 mL), the combined organic layers were washed with 10% NaCl and then treated with decolorizing carbon and stirred for 1 h. The mixture was dried over anhydrous Na₂SO₄(s), filtered through Celite and the solvent removed in vacuo to give the title compound as leaving a yellow oil (0.84 g).

Part C. Preparation of 5-bromo-1-fluoro-2,3-dihydro-1H-indene-1-carbonyl chloride

To a solution of the product from Part B (0.95 g, 3.67 mmol) in CH₂Cl₂ was added oxalyl chloride (0.96 mL, 11.00 mmol), followed by DMF (0.28 mL). The resulting bubbling solution was stirred at room temperature for 2 h, filtered through Celite, and the solvent was removed in vacuo to give the title compound as a brown oil (0.99 g).

Part D. Preparation of 5-bromo-1-fluoro-2,3-dihydro-1H-indene-1-carboxamide

To a solution of the product from Part C (0.99 g, 3.57 mmol) in acetone (20 mL) and at 0° C. was added aqueous NH₄OH (28%, 0.28 mL, 3.57 mmol), and the resulting dark brown mixture was stirred at 0° C. for 1 h. The reaction mixture was concentrated in vacuo, and the residue was partitioned between water and EtOAc (2×50 mL). The combined organic extracts were washed with 1N H₃PO₄, 10% NaHCO₃ (aq), 10% NaCl, and dried over anhydrous Na₂SO₄(s), filtered and concentrated in vacuo. The brown solid was purified by column chromatography on silica gel using a solvent gradient of CH₂Cl₂/MeOH (99/1 to 96/4). The title compound was obtained as a brown solid (0.205 g, 22%).

Part E. Preparation of tert-butyl (5-bromo-1-fluoro-2,3-dihydro-1H-inden-1-yl)methylcarbamate

To a solution of the product from Part D (0.234 g, 0.907 mmol) in anhydrous THF (5 mL) at 80° C. was added borane-DMS complex (0.172 mL, 1.813 mmol) dropwise. The reaction flask was equipped with a short-path condenser, and the mixture was stirred at reflux for 2 h, collecting THF and DMS. The mixture was then cooled to room temperature and MeOH (5 mL) was added, followed by 4N HCl in 1,4-dioxane (5 mL). The solvent was removed in vacuo to give a colorless solid (0.25 g, 98%). The solid was dissolved in THF (5 mL), and to the solution was added triethylamine (0.137 mL, 0.980 mmol), followed by di-tert-butyl dicarbonate (0.214 g, 0.980 mmol). The cloudy mixture was stirred at room temperature for 30 min, and 10% aq. NaHCO₃ (1 mL) was added. The resulting mixture was stirred at room temperature for 18 h and then concentrated in vacuo to an oily residue. The residue was dissolved in EtOAc (50 mL), washed with water, 1N H₃PO₄, 10% NaCl, and dried over anhydrous Na₂SO₄(s). The drying agent was filtered off, and the solvent was removed in vacuo to give the title compound as an oil (0.27 g, 88%).

Part F. Preparation of tert-butyl (1-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-yl)methylcarbamate

The product from Part E (0.27 g, 0.784 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound as a tan solid (0.159 g, 52%).

Part G. Preparation of tert-butyl (5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-fluoro-2,3-dihydro-1H-inden-1-yl)methylcarbamate

To a solution of the product from Part F (0.159 g, 0.405 mmol), the product from Example C (0.162 g, 0.405 mol), 1,3,5,7 tetramethyl-2,4,8-trioxa-6-phospha-6-phenyl adamantane (PA-Ph, CAS 97739-46-3) (3.55 g, 0.012 mmol) in THF (3 mL) was added K₃PO₄ (0.181 g, 0.85 mmol) and water (1 mL), followed by tris(dibenzylideneacetone)dipalladium(0) catalyst (3.71 mg, 0.00405 mmol). The resulting mixture was degassed by bubbling with N₂ for 20 min, and then stirred at room temperature for 12 h. The reaction mixture was diluted with EtOAc (50 mL), washed with 1N H₃PO₄, 10% NaHCO₃, 10% NaCl, and dried over anhydrous Na₂SO₄(s). The mixture was filtered and solvent was removed in vacuo to give a brown oil, which was purified by column chromatography on silica gel, eluting with 98/2 CH₂Cl₂/MeOH. The title compound was isolated as a colorless solid (0.118 g, 54%).

Part H. Preparation of N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-fluoro-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide

The product from Part G (0.118 g, 0.219 mmol) was dissolved in 4N HCl in 1,4-dioxane (2 mL) and stirred at room temperature for 1 h. The solvent was removed in vacuo and the residue was suspended in CH₂Cl₂ and evaporated (2×4 mL) to give a colorless solid (0.10 g, 96%). This solid was dissolved in CH₂Cl₂ (1 mL) and the resulting slurry was stirred in an ice bath. Triethylamine (0.059 mL, 0.422 mmol) was added to the slurry resulting in a clear solution and to this was added methanesulfonyl chloride (0.02 mL, 0.253 mmol). The resulting mixture was stirred in the ice bath for 1 h. The reaction mixture was diluted with CH₂Cl₂ 50 mL, washed with 1N H₃PO₄, 10% NaHCO₃, 10% NaCl, and dried over anhydrous Na₂SO₄(s). The drying agent was filtered off, and solvent was removed in vacuo leaving a crude product that was purified by column chromatography on silica gel, eluting with a gradient of 1:1 to 3:7 hexane:EtOAc. The title compound was obtained as a colorless solid (64 mg, 62%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.39 (s, 1H) 7.77 (d, J=7.72 Hz, 1H) 7.30-7.48 (m, 3H) 7.12-7.32 (m, 3H) 5.63 (d, J=7.72 Hz, 1H) 3.27 (s, 3H) 2.94-3.08 (m, 4H) 2.91 (s, 3H) 2.17-2.38 (m, 1H) 1.76-1.97 (m, 1H) 1.40 (s, 9H).

Example 62 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-3,4-dihydroisoquinolin-2(1H)-yl)methanesulfonamide (compound IB-L0-2.43)

Part A. Preparation of N-(3-bromophenethyl)-2,2,2-trifluoroacetamide

To a solution of 2-(3-bromophenyl)ethanamine (10 g, 50.0 mmol) in dichloromethane (200 ml) at 0° C. were added 2,6-lutidine (6.40 ml, 55.0 mmol) and then trifluoroacetic anhydride (7.77 ml, 55.0 mmol) dropwise, and the reaction was stirred at room temperature overnight. Water was added at 0° C. and the reaction was washed with 1M HCl, H₂O, and sat NaHCO₃. The organic was dried over mgSO₄, filtered and concentrated to provide the title compound as a tan solid (14.7 g, 99%).

Part B. Preparation of 1-(6-bromo-3,4-dihydroisoquinolin-2(1H)-yl)-2,2,2-trifluoro-ethanone

To the product from Part A (14.70 g, 49.6 mmol) and paraformaldehyde (2.39 g, 80 mmol) was added a mixture of acetic acid (81 ml) and sulfuric acid (53.7 ml) at room temperature. The suspension was stirred for 60 h during which time it became a solution. The reaction was poured into cold water. The reaction was diluted with ethyl acetate and washed with water, sat NaHCO₃, and brine. The organic layer was dried over mgSO₄, filtered and concentrated to provide the title compound, contaminated with the 8-bromo isomer, as a colorless oil (10.5 g, 67%).

Part C. Preparation of 6-bromo-1,2,3,4-tetrahydroisoquinoline

To a solution of the product from Part B (9.5 g, 30.8 mmol) in methanol (231 ml) and water (77 ml) at room temperature was added potassium carbonate (8.52 g, 61.7 mmol) and the reaction was stirred at room temperature for 30 min. The reaction was diluted with water and 25% isopropanol in chloroform and the pH was adjusted to 9 with 1N HCl. The mixture was extracted twice with 25% isopropanol in chloroform. The combined organic layers were dried over mgSO₄, filtered and concentrated to give the title compound, contaminated with the 8-bromo isomer (6.55 g, quantitative).

Part D. Preparation of 6-bromo-2-nitroso-1,2,3,4-tetrahydroisoquinoline

To a solution of the product from Part C (6.55 g, 30.9 mmol) in acetic acid (61.8 ml) and 3N aq. hydrochloric acid (10.29 ml, 30.9 mmol) at 0° C. was added 1.9M sodium nitrite (20.64 ml, 39.2 mmol) dropwise, and the reaction was stirred at room temperature overnight. The solvent was evaporated and the reaction was diluted with 25% isopropanol in chloroform and sat NaHCO₃. The aqueous layer was extracted twice with 25% isopropanol in chloroform. The combined organic layers were dried over mgSO₄, filtered and concentrated to give the title compound, contaminated with the 8-bromo isomer (6.97 g, 94%).

Part E. Preparation of 6-bromo-3,4-dihydroisoquinolin-2(1H)-amine

To a solution of the product from Part D (0.5 g, 2.074 mmol) in methanol (4.15 ml) was added zinc (0.542 g, 8.30 mmol) and the reaction was cooled to 0° C., followed by dropwise addition of AcOH (4.15 ml). The reaction was warmed to rt and the reaction was stirred for 2.5 h. The reaction was filtered and the solid was washed with methanol. The filtrate was evaporated and the residue was diluted with water and 25% isopropanol in chloroform and saturated NaHCO₃ was added. A white solid was removed by filtration, and the aqueous layer was extracted twice with 25% isopropanol in chloroform. The combined organic layers were dried over mgSO₄, filtered and concentrated to give the title compound, contaminated with the 8-bromo isomer (0.472 g, quantitative).

Part F. Preparation of tert-butyl 6-bromo-3,4-dihydroisoquinolin-2(1H)-ylcarbamate

A solution of the product from Part E (0.472 g, 2.078 mmol) in THF (20.78 ml) was cooled to 0° C. followed by addition of di-tert-butyl dicarbonate (0.531 ml, 2.286 mmol), and the reaction was stirred at room temperature overnight. Solvent was removed in vacuo, and the crude product was purified by column chromatography on silica gel (isolated lower R_(f) product) using a gradient starting with dichloromethane and ending with 10% ethyl acetate in dichloromethane to give the title compound (49 mg, 73%).

Part G. Preparation of tert-butyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroisoquinolin-2(1H)-ylcarbamate

A solution of the product from Part F (100 mg, 0.306 mmol), bis(pinacolato)diboron (85 mg, 0.336 mmol), and potassium acetate (57.3 μl, 0.917 mmol) in 1,4-dioxane (3.0 mL) was degassed by bubbling with N₂ gas for 15 min. 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (11.18 mg, 0.015 mmol) was added, and the resulting mixture was stirred at 95° C. for 16 h. The cooled solution was diluted with 25% isopropanol in chloroform and washed with water. The organic layer was dried over mgSO4, filtered and concentrated in vacuo. The product was purified by column chromatography on silica gel eluting with a gradient starting with dichloromethane and ending with 25% ethyl acetate in dichloromethane to give the title compound (70 mg, 61%).

Part H. Preparation of tert-butyl 6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-3,4-dihydroisoquinolin-2(1H)-ylcarbamate

A mixture of the product from Example C (74.8 mg, 0.187 mmol), the product from Part G (70 mg, 0.187 mmol) in EtOH (1.0 mL), toluene (1.0 mL) 1M aq. Na₂CO₃ (281 μl, 0.281 mmol) was degassed by bubbling with N₂ gas for 10 min. 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II) dichloride dichloromethane complex (6.84 mg, 9.35 μmol) was added, and degassing with N₂ was continued for 5 min. The reaction mixture was sealed and heated at 78° C. for 16 h. The reaction was cooled and diluted with 25% isopropanol in chloroform and washed with water. The organic was dried over mgSO4, filtered and concentrated. The crude product was purified by column chromatography on silica gel, eluting with a gradient starting with dichloromethane and ending with ethyl acetate to give the title compound (53 mg, 54%).

Part I. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-3,4-dihydroisoquinolin-2(1H)-yl)methanesulfonamide

To a solution of the product from Part H (25 mg, 0.048 mmol) in dichloromethane (0.5 mL) at room temperature was added TFA (0.5 mL) and the reaction was stirred for 30 min, and then concentrated in vacuo. The residue was diluted with 25% isopropanol in chloroform and washed with sat NaHCO₃. The organic layer was dried over mgSO₄, filtered and concentrated to give a solid (17.8 mg, 88%). To a solution of the solid in pyridine (0.5 mL) at 0° C. was added methanesulfonyl chloride (12.6 μl, 0.162 mmol) and the reaction was stirred at room temperature for 90 min. Methanol was added and the reaction was stirred for 10 min. The residue was diluted with 25% isopropanol in chloroform and washed with sat NaHCO₃. The organic layer was dried over mgSO₄, filtered and concentrated, and the product was purified by column chromatography on silica gel eluting with a gradient starting with dichloromethane and ending with ethyl acetate to give the title compound (11 mg, 52%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.39 (s, 1H) 8.53 (s, 1H) 7.76 (d, J=7.72 Hz, 1H) 7.11-7.42 (m, 5H) 5.63 (d, J=7.72 Hz, 1H) 4.04 (s, 2H) 3.28 (s, 3H) 3.10 (d, J=5.52 Hz, 2H) 2.98 (s, 3H) 2.90-3.05 (m, 2H) 1.40 (s, 9H).

Example 63 Preparation of N-((6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(furan-2-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)methanesulfonamide (compound IB-L0-2.65)

Part A. Preparation of N-((6-(3-bromo-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)methanesulfonamide

The product from Example 18, Part C (0.242 gm, 0.573 mmol) and the product from Example 49, Part E (0.200 gm, 0.57 mmol) was subjected to the conditions described for Example 49, Part F to give the title compound as an off-white solid (0.104 gm, 35%).

Part B. Preparation of N-((6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1 (2)-yl)-3-(furan-2-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)methanesulfonamide

A solution of the product from Part A (25.2 mg, 0.049 mmol) in 3:1 v/v THF-water (1.3 mL) was combined in a microwave tube at room temperature with furan-2-ylboronic acid (6.91 mg, 0.062 mmol) and potassium phosphate (16.84 mg, 0.097 mmol). To this was added 1,1′-bis(di-tert-butyl-phosphino)ferrocene palladium dichloride (1.65 mg, 2.53 umole). The tube was sealed and the resulting mixture was purged with nitrogen for 4 min and then heated for 16.5 h in an oil bath at 50° C. The reaction mixture was partitioned between dilute HCl and ethyl acetate, and the organic phase was dried (MgSO4) and concentrated in vacuo. The residue was purified by chromatography on silica gel (ethyl acetate-hexanes) to give the title compound as an off white solid (11.4 mg, 46%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.45 (s, 1H) 7.80-7.89 (m, 2H) 7.73-7.79 (m, 2H) 7.56-7.63 (m, 2H) 7.50 (t, J=6.07 Hz, 1H) 7.38 (d, J=2.94 Hz, 1H) 7.09 (d, J=3.31 Hz, 1H) 6.68 (dd, J=3.68, 1.84 Hz, 1H) 6.58 (s, 1H) 5.68 (d, J=7.72 Hz, 1H) 4.19 (d, J=5.15 Hz, 2H) 3.48 (s, 2H) 3.34 (s, 3H) 2.96 (s, 3H).

Example 64 Preparation of N-((6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(thiophen-2-yl)phenyl)-1H-inden-3-yl)methyl)methanesulfonamide (compound IB-L0-2.63)

The product from Example 63, Part A (26.5 mg, 0.05 mmol) was reacted with thiophen-2-yl boronic acid (8.3 mg, 0.065 mmol) as described in Example 63, Part B to give the title compound as an off-white solid (8.6 mg, 32%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.47 (s, 1H) 7.86 (d, J=7.72 Hz, 2H) 7.55-7.78 (m, 5H) 7.50 (t, J=6.25 Hz, 1H) 7.38 (d, J=2.57 Hz, 1H) 7.16-7.21 (m, 1H) 6.58 (s, 1H) 5.69 (d, J=7.72 Hz, 1H) 4.19 (d, J=4.78 Hz, 2H) 3.48 (s, 2H) 3.30 (s, 3H) 2.96 (s, 3H).

Example 65 Preparation of N-((6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-(thiophen-3-yl)phenyl)-1H-inden-3-yl)methyl)methanesulfonamide (compound IB-L0-2.62)

The product from Example 63, Part A (25.9 mg, 0.050 mmol) was reacted with thiophen-3-yl boronic acid (8.1 mg, 0.063 mmol) as described in Example 63, Part B to give the title compound as an off-solid (8.6 mg, 33%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.45 (d, J=1.84 Hz, 1H) 7.93 (d, J=2.94 Hz, 1H) 7.87 (d, J=7.72 Hz, 1H) 7.53-7.75 (m, 6H) 7.49 (t, J=6.25 Hz, 1H) 7.39 (d, J=2.57 Hz, 1H) 6.57 (s, 1H) 5.68 (dd, J=7.91, 2.02 Hz, 1H) 4.19 (d, J=5.15 Hz, 2H) 3.47 (s, 2H) 3.21 (s, 3H) 2.96 (s, 3H).

Example 66 Preparation of N-((6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-(furan-3-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)methanesulfonamide (compound IB-L0-2.67)

The product from Example 63, Part A (25.9 mg, 0.050 mmol) was reacted with furan-3-yl boronic acid (7.2 mg, 0.064 mmol) as described in Example 63, Part B to give the title compound as an off-white solid (10.6 mg, 45%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.46 (s, 1H) 7.84 (d, J=8.09 Hz, 1H) 7.80 (t, J=1.84 Hz, 1H) 7.68-7.75 (m, 2H) 7.54-7.64 (m, 2H) 7.50 (t, J=6.07 Hz, 1H) 7.35 (d, J=2.57 Hz, 1H) 7.08 (d, J=1.47 Hz, 1H) 6.57 (s, 1H) 5.68 (d, J=8.09 Hz, 1H) 3.47 (s, 2H) 3.30 (s, 3H) 2.96 (s, 3H).

Example 67 Preparation of 1-(3-tert-butyl-4-methoxy-5-(1-(methylsulfonyl)indolin-5-yl)phenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.32)

Part A. Preparation of 5-bromo-1-(methylsulfonyl)indoline

To DMF (5.0 ml) was added sodium hydride (53 mg, 1.3 mmol) and the solution stirred at room temperature for 30 min. 5-Bromoindoline (240 mg, 1.2 mmol) was added and the solution was stirred at room temperature for 30 min. Methanesulfonyl chloride (94 ul, 1.2 mmol) was added and the solution stirred at room temperature overnight, then concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with 2% CH₃OH/CHCl₃ to give the title compound (202 mg, 60%).

Part B. Preparation of 1-(methylsulfonyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) indoline

The product from Part A (192 mg, 0.70 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound (114 mg, 51%).

Part C. Preparation of 1-(3-tert-butyl-4-methoxy-5-(1-(methylsulfonyl)indolin-5-yl)phenyl) pyrimidine-2,4(1H,3H)-dione

The product from Example C (58 mg, 0.145 mmol) and the product from Part B (56.2 mg, 0.174 mmol) were subjected to the conditions described for Example 42, Part C to give the title compound as a colorless solid (12 mg, 18%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.40 (d, J=1.84 Hz, 1H) 7.76 (d, J=7.72 Hz, 1H) 7.53-7.67 (m, 1H) 7.45 (s, 1H) 7.32-7.41 (m, 2H) 7.23 (dd, J=13.60, 2.57 Hz, 2H) 5.63 (dd, J=8.09, 2.21 Hz, 1H) 3.99 (t, J=8.46 Hz, 2H) 3.29 (s, 3H) 3.18 (t, J=8.46 Hz, 2H) 3.04 (s, 3H).

Example 68 Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)quinoxalin-2-yl)methanesulfonamide (compound IB-L0-2.26)

Part A. Preparation of N-(4-bromo-2-nitrophenyl)-3-oxobutanamide

A solution of diketene (0.32 ml, 4.15 mmol) in toluene (2 ml) was added to an 80° C. solution of 4-bromo-2-nitroaniline (900 mg, 4.15 mmol) in toluene (7 ml) and the solution was heated at reflux for 5 h. Triethylamine (0.58 ml, 4.15 mmol) in toluene (2 ml) was added and refluxing was continued for 30 min. The cooled solution was concentrated in vacuo and the crude product purified by column chromatography on silica gel eluting with 2:1 hexane/EtOAc to give the title compound as a yellow solid (920 mg, 74%).

Part B. Preparation of 6-bromoquinoxalin-2(1H)-one

To a solution of sodium hydroxide (337 mg, 8.4 mmol) in H₂O (2.1 ml) was added the product from Part A (423 mg, 1.4 mmol) and stirring was continued at 65° C. for 1 h. The cooled solution was diluted with H₂O (4 ml) and sodium borohydride (31.9 mg, 0.84 mmol) was added and stirring was continued at room temperature for 1.5 h. Ice was added to the solution followed by dropwise addition of 6N HCl until acidic. The resulting solid was collected by filtration, washed with H₂O, and dried in a vacuum oven to give the title compound (273 mg, 86%).

Part C. Preparation of 6-bromo-2-chloroquinoxaline

To a flask containing phosphorus oxychloride (3.4 ml, 36.5 mmol) was added the product from Part B (255 mg, 1.1 mmol) and the solution was heated at 60° C. overnight. The solution was cooled to room temperature, poured over ice and the resulting solid collected by filtration to give the title compound (239 mg, 87%).

Part D. Preparation of 6-bromo-N-(4-methoxybenzyl)quinoxalin-2-amine

To a solution of the product from Part C (2.8 g, 11.5 mmol) in ethanol (58 ml) was added (4-methoxyphenyl)methanamine (7.5 ml, 57.5 mmol) and the solution was stirred at room temperature for 1 h. Solvent was concentrated in vacuo and the crude product was purified by column chromatography on silica gel eluting with 20% EtOAc/hexane to give the title compound (1.97 g, 50%).

Part E. Preparation of N-(4-methoxybenzyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) quinoxalin-2-amine

The product from Part D (500 mg, 1.45 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound (378 mg, 66%).

Part F. Preparation of 1-(3-tert-butyl-4-methoxy-5-(2-(4-methoxybenzylamino)quinoxalin-6-yl)phenyl)pyrimidine-2,4(1H,3H)-dione

The product from Part E (133 mg, 0.34 mmol) was subjected to the conditions described for Example 42, Part C to give the title compound (125 mg, 82%).

Part G. Preparation of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)quinoxalin-2-yl)methanesulfonamide

To a solution of the product from Part F (87 mg, 0.16 mmol) in CH₂Cl₂ (1.6 ml) and H₂O (0.07 ml) was added DDQ (40.4 mg, 0.18 mmol) and stirred vigorously at room temperature for 1 h. The solution was filtered through Celite and the dark solid collected on the Celite was dissolved in 5 ml CH₃OH. The methanol solution was filtered, solvent removed in vacuo and the crude intermediate was dissolved in pyridine (0.6 ml). Methanesulfonyl chloride (11 ul, 0.14 mmol) was added and the solution was heated at 60° C. overnight. The cooled solution was concentrated in vacuo and the crude product was purified by column chromatography on silica gel eluting with 2% CH₃OH/CHCl₃ to give the title compound (7.7 mg, 12%). ¹H NMR (300 MHz, CDCl₃) δ 8.42 (s, 1H) 8.29 (s, 1H) 8.13 (s, 1H) 7.88 (d, 1H) 7.54 (s, 1H) 7.19-7.43 (m, 4H) 5.83 (dd, J=7.91, 2.39 Hz, 1H) 3.32 (s, 3H) 3.27 (s, 3H) 1.46 (s, 9H).

Example 69 Preparation of N-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methanesulfonamide (compound IB-L0-2.44)

Part A. Preparation of 5-bromo-2,3-dihydro-1H-inden-1-ol

A suspension of 5-bromo-2,3-dihydro-1H-inden-1-one (2.07 g, 9.81 mmol) in ethanol (49 mL) was treated with the sodium borohydride (186 mg, 4.90 mmol) all at once. After a few minutes, the solution warmed slightly and all solids dissolved. After stirring at room temperature for 1 h, the mixture was concentrated in vacuo to remove ethanol. The gum obtained was partitioned between ethyl acetate and water. The organic layer was extracted with saturated sodium bicarbonate solution (2×) and saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded the title compound (3.05 g, 98%) as a colorless oil, which crystallized upon pumping under high vacuum overnight.

Part B. Preparation of 1-azido-5-bromo-2,3-dihydro-1H-indene

A solution of the product from Part A (1.01 g, 4.73 mmol) in toluene (8.1 mL) was treated with the diphenyl phosphoroyl azide (1.23 mL, 1.56 g, 5.67 mmol) followed by cooling to 0° C. The solution was treated dropwise with DBU (855 μL, 863 mg, 5.67 mmol) followed by stirring at 0° C. for 2 h, and then warming to room temperature for 48 h. The mixture was diluted with ethyl acetate and extracted with water and 1 M citric acid solution, and then with saturated sodium chloride solution. Drying (Na₂SO₄) and concentration in vacuo afforded a brown oil, which was purified by flash chromatography, eluting with 5-50% ethyl acetate in hexanes. These procedures afforded the title compound (889 mg, 79%) as a light yellow oil.

Part C. Preparation of 5-bromo-2,3-dihydro-1H-inden-1-amine

To a −15° C. solution of 1M lithium aluminum hydride in THF (0.84 ml, 0.84 mmol) in THF (0.88 ml) was added dropwise a solution of the product from Part B (200 mg, 0.84 mmol) and the solution was warmed to room temperature and stirred overnight. The solution was cooled to −10° C. and 4:1 THF:H₂O (0.5 ml) was added dropwise. The solution was stirred at room temperature for 4 h, filtered through Celite and the filtrate concentrated in vacuo to give the title compound (151 mg, 85%).

Part D. Preparation of N-(5-bromo-2,3-dihydro-1H-inden-1-yl)methanesulfonamide

To a solution of the product from Part C (150 mg, 0.71 mmol) in pyridine (3.5 ml) was added methanesulfonyl chloride (61 ul, 0.78 mmol) and the solution was stirred at room temperature overnight. The solution was concentrated in vacuo and the crude product was purified by column chromatography on silica gel eluting with 20% EtOAc/hexane to give the title compound (111 mg, 54%).

Part E. Preparation of N-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methanesulfonamide

The product from Part D (109 mg, 0.38 mmol) was subjected to the conditions described for Example 42, Part B and Part C to give the title compound (39 mg, 60%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.39 (d, J=1.84 Hz, 1H) 7.77 (d, J=7.72 Hz, 1H) 7.58 (d, J=8.82 Hz, 1H) 7.39-7.48 (m, 3H) 7.27 (d, J=2.57 Hz, 1H) 7.19-7.23 (m, 1H) 5.63 (dd, J=8.09, 2.21 Hz, 1H) 4.86 (q, J=7.97 Hz, 1H) 3.27 (s, 3H) 3.04 (s, 3H) 2.90-3.01 (m, 1H) 2.71-2.90 (m, 1H) 2.52-2.62 (m, 1H) 1.85-1.98 (m, 1H) 1.40 (s, 9H).

Example 70 Preparation of N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.17)

Part A. Preparation of (E)-5-bromo-1-(methoxymethylene)-2,3-dihydro-1H-indene

To a suspension of (methoxymethyl)triphenylphosphonium chloride (39.7 g, 116 mmol) in THF (210 ml) at −20° C. was added dropwise 1M potassium t-butoxide (95 ml, 95 mmol) and the solution stirred at −20° C. for 20 min. To this solution was added dropwise a solution of 5-bromo-2,3-dihydro-1H-inden-1-one (10.0 g, 47.4 mmol) in THF (230 ml) and stirring was continued at −20° C. for 30 min then warmed to room temperature and stirred for 2 h. The solution was filtered through Celite and the filtrate was concentrated in vacuo to give crude product which was purified by chromatography on a silica gel cartridge eluting with CH₂Cl₂/hexane to give the title compound (10.56 g, 93%).

Part B. Preparation of 5-bromo-2,3-dihydro-1H-indene-1-carbaldehyde

To a solution of the product from Part A (1.44 g, 6.0 mmol) in CH₂Cl₂ (30 ml) at −78° C. was added dropwise 1M boron tribromide in CH₂Cl₂ (13.8 ml, 13.8 mmol) and stirring was continued at −78° C. for 4 h. The solution was poured into an ice-saturated. sodium bicarbonate mixture and stirred vigorously. The layers were separated and the aqueous layer was extracted with CH₂Cl₂ (2×), the organic extracts were combined, dried (Na₂SO₄), and concentrated in vacuo to give crude product which was purified by column chromatography on silica gel eluting with 10% EtOAc/hexane to give the title compound (604 mg, 45%).

Part C. Preparation of 1-(5-bromo-2,3-dihydro-1H-inden-1-yl)-N-(4-methoxybenzyl)-methanamine

To a solution of the product from Part B (300 mg, 1.3 mmol) in CH₃OH (18.5 ml) was added 4-methoxybenzylamine (0.17 ml, 1.3 mmol) and decaborane (49 mg, 0.4 mmol) and stirring was continued at room temperature for 1 h, solvent was concentrated in vacuo and the crude product was purified by column chromatography on silica gel eluting with 3% CH₃OH/CHCl₃ to give the title compound (264 mg, 57%).

Part D. Preparation of N-((5-bromo-2,3-dihydro-1H-inden-1-yl)methyl)-N-(4-methoxy-benzyl)methanesulfonamide

To a solution of the product from Part C (88 mg, 0.25 mmol) in CH₂Cl₂ (1.0 ml) was added triethylamine (39 ul, 0.28 mmol) and methanesulfonyl chloride (22 ul, 0.28 mmol) and stirring was continued at room temperature for 1 h, solvent was concentrated in vacuo and the crude product was purified by column chromatography on silica gel eluting with EtOAc/hexane to give the title compound (55 mg, 51%).

Part E. Preparation of N-(4-methoxybenzyl)-N-((5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide

The product from Part D (1.15 g, 2.71 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound (840 mg, 66%).

Part F. Preparation of N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide

The product from Part E (840 mg, 2.1 mmol) was subjected to the conditions described for Example 42, Part C and the isolated material (1.28 g, 2.07 mmol) was dissolved in CH₂Cl₂ (10 ml) and trifluoroacetic acid (10 ml) was added slowly. After stirring at room temperature for 1 h, solvent was concentrated in vacuo and the crude product was suspended in 10% NaHCO₃, extracted with CH₂Cl₂ (3×), the organic extracts combined, dried (Na₂SO₄), and solvent concentrated in vacuo to give crude product which was purified by column chromatography on silica gel eluting with 2% CH₃OH/CHCl₃ to give title compound (0.84 g, 81%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.39 (s, 1H) 7.77 (d, J=8.09 Hz, 1H) 7.29-7.59 (m, 3H) 7.25 (d, J=2.94 Hz, 1H) 7.10-7.22 (m, 2H) 5.63 (dd, J=7.72, 1.84 Hz, 1H) 3.93 (s, 3H) 3.26 (s, 2H) 3.23-3.40 (m, 1H) 2.89 (s, 3H) 2.71-3.09 (m, 2H) 2.14-2.32 (m, 1H) 1.75-1.95 (m, 1H) 1.40 (s, 9H).

Example 71 Preparation of 5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-N-(methylsulfonyl)-2,3-dihydro-1H-indene-1-carboxamide (compound IB-L0-2.34)

Part A. Preparation of 5-bromo-2,3-dihydro-1H-indene-1-carboxylic acid

To a solution of the product from Example 70, Part B (300 mg, 1.3 mmol) and 2-methyl-2-pentene (8 ml) in tert-butanol (32 ml) was added a solution of sodium chlorite (1.36 g, 0.12 mmol) in H₂O (12 ml) containing sodium dihydrogen phosphate (1.07 g, 8.9 mmol) and the mixture was stirred vigorously for 20 min at room temperature. Solvents were concentrated in vacuo and the residue was diluted with H₂O, extracted with EtOAc (3×), extracts combined, dried (Na₂SO₄), and concentrated in vacuo to give the title compound (180 mg, 56%).

Part B. Preparation of 5-bromo-N-(methylsulfonyl)-2,3-dihydro-1H-indene-1-carboxamide

To a solution of the product from Part A (100 mg, 0.42 mmol) in CH₂Cl₂ (1.7 ml) was added carbonyldiimidazole (67.3 mg, 0.42 mmol) and the reaction was stirred for 2 h at room temperature. Methanesulfonamide (39.5 mg, 0.42 mmol) and DBU (62.5 mg, 0.42 mmol) were added and stirring was continued at room temperature for 2 h. Solution was diluted with CH₂Cl₂, washed 1N HCl, brine, dried (Na₂SO₄), concentrated in vacuo and the crude product was purified by column chromatography on silica gel eluting with 20% EtOAc/hexane to give the title compound (121 mg, 92%).

Part C. Preparation of N-(methylsulfonyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-indene-1-carboxamide

The product from Part B (159 mg, 0.5 mmol) was subjected to the conditions described for Example 42, Part B to give the title compound (144 mg, 79%).

Part D. Preparation of 5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-N-(methylsulfonyl)-2,3-dihydro-1H-indene-1-carboxamide

The product from Part C (134 mg, 0.34 mmol) was subjected to the conditions described for Example 42, Part C to give title compound (14 mg, 8%). ¹H NMR (300 MHz, CDCl₃) δ 8.11 (m, 1H) 7.08-7.57 (m, 7H) 5.80 (dd, J=7.91, 2.39 Hz, 1H) 4.07 (dd, J=9.01, 6.07 Hz, 1H) 3.33 (s, 3H) 3.08 (s, 3H) 2.91-3.22 (m, 1H) 2.35-2.74 (m, 1H) 1.44 (s, 9H) 1.17-1.34 (m, 1H) 0.60-1.00 (m, 1H).

Example 72 Preparation of 1-(3-(2-aminobenzo[d]thiazol-6-yl)-5-tert-butyl-4-methoxy-phenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.39)

The title compound was prepared using the procedures described for the preparation of Example 53, substituting 5-bromo[d]thiazol-2-amine for 6-bromobenzo[d]thiazol-2-amine. ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (d, J=1.84 Hz, 1H) 8.40 (s, 2H) 7.84 (d, J=8.09 Hz, 1H) 7.78 (d, J=7.72 Hz, 1H) 7.54 (d, J=1.47 Hz, 1H) 7.27-7.32 (m, 3H) 5.64 (dd, J=8.09, 2.21 Hz, 1H) 3.27 (s, 3H) 1.41 (s, 9H).

Example 73 Preparation of N-(2-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)propan-2-yl)methanesulfonamide (compound IB-L0-2.29)

To a solution of the product from Example 45, Part D (20 mg, 0.038 mmol) in 1:1 benzene:MeOH (0.6 ml) was added platinum(IV) oxide (1 mg). The resulting mixture was stirred under 1 atm H₂ at room temperature for 1 h, and then filtered thru celite, and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using 3% MeOH in CHCl₃ as the eluent to give the title compound as a solid (14 mg, 70%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.39 (s, 1H) 7.77 (d, J=7.72 Hz, 1H) 7.58 (d, J=8.09 Hz, 1H) 7.28-7.38 (m, 2H) 7.21-7.26 (m, 2H) 7.07 (s, 1H) 5.63 (d, J=7.72 Hz, 1H) 3.61 (dd, J=8.64, 5.33 Hz, 1H) 3.25 (s, 3H) 3.00 (s, 3H) 2.75-2.98 (m, 2H) 1.97-2.21 (m, 2H) 1.40 (s, 9H) 1.24 (d, J=8.46 Hz, 6H).

Example 74 Preparation of (S)—N-(2-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)propan-2-yl)methanesulfonamide (compound IB-L0-2.22)

The product from Example 73 (10 mg) was subjected to chiral chromatography (Chiralpak AD-H column; eluting with 1:3 2-PrOH:hexanes(0.1% TFA)). Isolation of the earlier eluting component gave the title compound (4.4 mg). ¹H NMR identical to the product from Example 103.

Example 75 Preparation of (R)—N-(2-(5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)propan-2-yl)methanesulfonamide (compound IB-L0-2.37)

The product from Example 73 (10 mg) was subjected to chiral chromatography (Chiralpak AD-H column; eluting with 1:3 2-PrOH:hexanes(0.1% TFA)). Isolation of the later eluting component gave the title compound (4.2 mg). ¹H NMR identical to the product from Example 73.

Example 76 Preparation of (S)—N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.9)

The product from Example 70, Part F (20 mg) was subjected to chiral chromatography (Chiralpak AD-H column; eluting with 1:4 2-PrOH:hexanes(0.1% TFA)). Isolation of the earlier eluting component gave the title compound (5.3 mg). ¹H NMR identical to the product from Example 70, Part F.

Example 77 Preparation of (R)—N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.15)

The product from Example 70, Part F (20 mg) was subjected to chiral chromatography (Chiralpak AD-H column; eluting with 1:4 2-PrOH:hexanes(0.1% TFA)). Isolation of the later eluting component gave the title compound (5.7 mg). ¹H NMR identical to product from Example 70, Part F.

Example 78 Preparation of (S)—N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-fluoro-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.20)

The product from Example 61, Part H was subjected to the conditions described in Example 74 to give the title compound. ¹H NMR identical to the product from Example 61, Part H.

Example 79 Preparation of (R)—N-((5-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1-fluoro-2,3-dihydro-1H-inden-1-yl)methyl)methanesulfonamide (compound IB-L0-2.10)

The product from Example 61, Part H was subjected to the conditions described in Example 104 to give the title compound. ¹H NMR identical to the product from Example 61, Part H.

Example 80 Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-tert-pentylphenyl)naphthalen-2-yl)methanesulfonamide (compound IB-L0-2.52)

Part A. Preparation of 1-(3-tert-butyl-5-iodo-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione

2-tert-Amylphenol (5.0 g, 30 mmol) was reacted according to the procedure from Example C, Part A, Part B, and Part C to provide the title product as a colorless solid. (6.7 g, 56% overall yield for 3 steps).

Part B. Preparation of N-(6-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-3-tert-pentylphenyl)naphthalen-2-yl)methanesulfonamide

The product from Part A (100 mg, 0.241 mmol), the product from Example 2A, Part B (92 mg, 0.266 mmol), sodium carbonate (38.4 mg, 0.362 mmol) and 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (9.9 mg, 0.012 mmol) were dissolved in a toluene (4 mL) and ethanol (4 mL) solvent mixture which was sparged with nitrogen for 10 min, then the mixture heated to 85° C. for 18 h. To the solution was then added CH₂Cl₂ (20 mL) followed by 1N aqueous HCl (10 mL), the organic layer separated 3-mercaptopropyl silica gel (100 mg) and magnesium sulfate added. The solution was concentrated and purified by column chromatography on silica gel using 3% MeOH in CH₂Cl₂ as the eluent to provide the title compound as a colorless solid (71 mg, 58%). ¹H NMR (300 MHz, DMSO-d₆): δ 11.41 (s, 1H), 10.04 (s, 1H), 8.03 (s, 1H), 7.95 (t, J=8.7 Hz, 2H), 7.79 (d, J=7.7 Hz, 1H), 7.73 (d, J=1.8 Hz, 1H), 7.69 (dd, J=8.8, 1.6 Hz, 1H), 7.42 (dd, J=8.8, 2.2 Hz, 1H), 7.37 (d, J=2.6 Hz, 1H), 7.25 (d, J=2.6 Hz, 1H), 5.65 (dd, J=8.1, 1.6 Hz, 1H), 3.22 (s, 3H), 3.08 (s, 3H), 1.84 (m, 2H), 1.38 (s, 6H), 0.73 (t, J=7.5 Hz, 3H).

Example 81 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)-N-methylmethanesulfonamide (compound IB-L0-2.16)

Part A. Preparation of N-methyl-N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-inden-3-yl)methyl)methanesulfonamide

To a solution of the product from Example 49, Part E (210 mg, 0.60 mmol) in anhydrous THF (5 ml) was added a 1.0M solution of lithium bis(trimethylsilyl)amide in toluene (0.60 ml, 0.60 mmol), and the resulting mixture was stirred at room temperature for 5 min. Iodomethane (0.075 ml, 1.20 mmol) was added and the mixture was stirred at room temperature for 2 h, and was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried with sodium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel eluting with a gradient of ethyl acetate/in hexane (10% to 25%) to give the title compound as a solid (125 mg, 57%).

Part B. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-inden-3-yl)methyl)-N-methylmethanesulfonamide

A mixture of the product from Example C (60.0 mg, 0.15 mmol), the product of Part A (54.5 mg, 0.15 mmol), potassium phosphate (66.9 mg, 0.315 mmol), PA-Ph (CAS 97739-46-3, 1.32 mg, 4.5 μmol) and tris(dibenzylideneacetone)dipalladium(0) (1.37 mg, 1.5 μmol) in tetrahydrofuran (3.0 ml) and water (1.0 ml) was purged with N₂ for 30 min. The mixture was stirred at 50° C. for 2 h, and then partitioned between ethyl acetate and 1M HCl. The organic layer was washed with saturated sodium bicarbonate, brine, dried with sodium sulfate, and filtered. The filtrate was treated with 3-mercaptopropyl functionalized silica gel, filtered through celite and concentrated in vacuo. The crude product was purified by column chromatography on C-18 reversed-phase silica gel using a solvent gradient of 10-100% acetonitrile in water (0.1% TFA) to give the title compound as a solid (19 mg, 24%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (d, J=1.84 Hz, 1H) 7.78 (d, J=7.72 Hz, 1H) 7.65 (m, 2H) 7.49 (dd, J=7.72, 1.47 Hz, 1H) 7.26 (m, 2.57 Hz, 2H) 6.63 (s, 1H) 5.64 (dd, J=7.72, 2.21 Hz, 1H) 4.26 (s, 2H) 3.51 (s, 2H) 3.26 (s, 3H) 3.01 (s, 3H) 2.72 (s, 3H) 1.41 (s, 9H).

Example 82 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2)-yl)-2-methoxyphenyl)benzo[b]thiophen-2-yl)methyl)methanesulfonamide (compound IB-L0-2.40)

Part A. Preparation of ethyl 6-bromobenzo[b]thiophene-2-carboxylate

To a solution of 4-bromo-2-fluorobenzaldehyde (1.02 g, 4.83 mmol) in DMSO (4 mL), was added ethyl 2-mercaptoacetate (0.58 mL, 5.31 mmol), followed by Et₃N (1.35 mL, 9.65 mmol), and the mixture was heated at 80° C. for 3 h. The resulting dark mixture was poured into water (50 mL) and extracted with EtOAc (2×50 mL). The combined organic extracts were washed with 10% NaCl, dried over anhydrous Na₂SO₄, filtered and concentrated in vacuo to give the title compound as a light yellow waxy solid (1.29 g, 94%).

Part B. Preparation of (6-bromobenzo[b]thiophen-2-yl)methanol

To a solution of the product from Part A (0.82 g, 2.88 mmol) in Et₂O (20 mL) at 0° C. was added a 1M solution of lithium aluminum hydride in Et₂O (3.16 mL, 3.16 mmol) dropwise, and the resulting slurry was stirred between 5-10° C. for 1 h. The slurry was treated with 0.3 mL H₂O, 0.3 mL 15% aq NaOH, 0.7 mL H₂O, stirred 30 min, filtered and concentrated in vacuo to give the title compound as a colorless solid (0.58 g, 83%)

Part C. Preparation of 6-bromo-2-(bromomethyl)benzo[b]thiophene

A mixture of the product from Part B (85 mg, 0.35 mmol), N-bromosuccinimide (74 mg, 0.413 mmol) and triphenylphosphine (106 mg, 0.403 mmol) in CH₂Cl₂ (2 mL) was stirred at room temperature for 2 h. The reaction mixture was diluted with 50 mL CH₂Cl₂, washed with water, 10% NaHCO₃ and 10% NaCl, dried over anhydrous mgSO₄, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel eluting with 9:1 hexane:EtOAc to yield the title compound as a white solid (96 mg, 89%).

Part D. Preparation of N-(4-methoxybenzyl)methanesulfonamide

To a solution of (4-methoxyphenyl)methanamine (1.317 g, 9.60 mmol) in CH₂Cl₂ (10 mL) was added methanesulfonyl chloride (0.34 mL, 4.36 mmol) dropwise. The mixture was stirred at room temperature for 2 h. The reaction mixture was diluted with 50 mL CH₂Cl₂ washed with 1N H₃PO₄, 10% NaCl, dried over anhydrous mgSO₄, filtered and concentrated in vacuo to give the title compound as a white solid (0.84 g, 89%).

Part E. Preparation of N-((6-bromobenzo[b]thiophen-2-yl)methyl)-N-(4-methoxybenzyl)-methanesulfonamide

A solution of the product from Part D (0.223 g, 1.037 mmol) in EtOH (2 mL) and 1.0M NaOH (1.1 mL, 1.1 mmol) was added to a slurry containing the product from Part C (0.317 g, 1.037 mmol) in EtOH (4 mL). The resulting slurry was heated at reflux for 1 h, and then concentrated in vacuo to give a pasty solid. The residue was partitioned between 40 mL water and 40 mL EtOAc. The organic layer was washed with 1N H₃PO₄, 10% NaHCO₃, 10% NaCl, dried over anhydrous Na₂SO₄, filtered and concentrated in vacuo leaving a yellow oil. The crude product was purified by column chromatography on silica gel eluting with CH₂Cl₂ to give the title compound as a colorless solid (0.15 g, 33%).

Part F. Preparation of N-(4-methoxybenzyl)-N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]thiophen-2-yl)methyl)methanesulfonamide

The product from Part E (0.15 g, 0.34 mmol) was subjected to the conditions described for the preparation of Example 42, Part B to give the title compound as a colorless solid (0.121 g, 73%).

Part G. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-2-yl)methyl)-N-(4-methoxybenzyl)methanesulfonamide

The product from Part F (24 mg, 0.049 mmol) was subjected to the conditions described for the preparation of Example 42, Part C to give the title compound as a colorless solid (20 mg, 65%).

Part H. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-2-yl)methyl)methanesulfonamide

A solution of the product from Part G (14 mg, 0.022 mmol) in CH₂Cl₂ (0.3 mL) and TFA (0.3 mL) was stirred at room temperature for 4 h and then concentrated in vacuo. The residue was partitioned between 10 mL CH₂Cl₂ and 2 mL 10% aq. NaHCO₃ and the organic layer was concentrated in vacuo. The crude product was purified by column chromatography on silica gel eluting with 99:1 CH₂Cl₂:MeOH to give the title compound as a colorless solid (5 mg, 44%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.40 (s, 1H) 8.09 (s, 1H) 7.82-7.97 (m, 3H) 7.79 (d, J=7.72 Hz, 1H) 7.47-7.63 (m, 1H) 7.40 (s, 1H) 7.26-7.34 (m, 1H) 5.64 (d, J=7.72 Hz, 1H) 4.48 (d, J=5.88 Hz, 2H) 3.23 (s, 3H) 2.95 (s, 3H) 1.41 (s, 9H).

Example 83 Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-3-yl)methyl)-N-methylmethanesulfonamide (compound IB-L0-2.21)

Part A. Preparation of N-((6-bromobenzo[b]thiophen-3-yl)methyl)-N-methylmethanesulfonamide

A mixture of the product from Example 46, Part D (0.100 g, 0.382 mmol), N-methylmethanesulfonamide (45.9 mg, 0.42 mmol) and potassium carbonate (0.127 g, 0.918 mmol) in N,N-dimethylacetamide (5 mL). The mixture was stirred at 80° C. for 11 h, cooled to room temperature and partitioned between diethylether and water (3×), dried over mgSO₄, filtered and concentrated in vacuo to give the title compound as a colorless waxy solid (0.128 g, quant).

Part B. Preparation of N-methyl-N-((6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]thiophen-3-yl)methyl)methanesulfonamide

The product from Part A (0.128 g, 0.382 mmol) was subjected to the conditions described for the preparation of Example 42, Part B to give the title compound as a colorless, crystalline solid (0.120 g, 82%).

Part C. Preparation of N-((6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)benzo[b]thiophen-3-yl)methyl)-N-methylmethanesulfonamide

The product from Part B (50.6 mg, 0.133 mmol) was subjected to the conditions described for the preparation of Example 49, Part F to give the title compound as a colorless solid (61.5 mg, 88%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.41 (s, 1H) 8.17 (d, J=−1.47 Hz, 1H) 8.09 (d, J=8.09 Hz, 1H) 7.74-7.85 (m, 2H) 7.63 (dd, J=8.46, 1.47 Hz, 1H) 7.29-7.36 (m, 2H) 5.65 (d, J=7.72 Hz, 1H) 4.52 (s, 2H) 3.24 (s, 3H) 3.03 (s, 3H) 2.70 (s, 3H) 1.42 (s, 9H).

The following compounds were prepared utilizing the above discussion:

N-(2-(3-tert-butyl-5-(2,4-dioxotetrahydropyrimidin-1(2H)-yl)-2-methoxyphenyl)-1H-benzo[d]imidazol-5-yl)-N-(methylsulfonyl)methanesulfonamide (compound IA-L0-2.10) ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.45 (s, 9H) 2.73 (t, J=6.62 Hz, 2H) 3.48 (s, 3H) 3.56 (s, 6H) 3.83 (t, J=6.80 Hz, 2H) 4.05 (s, 1H) 7.38 (dd, J=8.46, 1.84 Hz, 1H) 7.46 (d, J=2.57 Hz, 1H) 7.71 (d, J=8.46 Hz, 1H) 7.76 (d, J=2.57 Hz, 1H) 7.82 (d, J=1.84 Hz, 1H) 10.41 (s, 1H)

N-((6-(3-tert-butyl-2-chloro-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)phenyl)benzo[b]thiophen-3-yl)methyl)methanesulfonamide (compound IB-L0-2.35). ¹H NMR (300 MHz, DMSO-d₆) δ ppm 1.52 (s, 9H) 2.95 (s, 3H) 4.44 (d, J=5.88 Hz, 2H) 5.68 (d, J=8.09 Hz, 1H) 7.40 (d, J=2.57 Hz, 1H) 7.46 (dd, J=8.09, 1.47 Hz, 1H) 7.56 (d, J=2.57 Hz, 1H) 7.62 (t, J=6.07 Hz, 1H) 7.72 (s, 1H) 7.83 (d, J=8.09 Hz, 1H) 8.01 (m, 2H) 11.46 (s, 1H).

1-(3-tert-butyl-5-(2-chlorobenzo[d]thiazol-6-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.38). ¹H NMR (300 MHz, DMSO-D6) δ ppm 1.41 (s, 9H) 3.24 (s, 3H) 5.65 (dd, J=8.09, 2.21 Hz, 1H) 7.34 (s, 2H) 7.73 (dd, J=8.64, 1.65 Hz, 1H) 7.79 (d, J=8.09 Hz, 1H) 8.07 (d, J=8.46 Hz, 1H) 8.30 (d, J=1.84 Hz, 1H) 11.42 (d, J=1.84 Hz, 1H)

N-(2-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)quinolin-6-yl)methanesulfonamide (compound IB-L0-2.48).

1-(3-tert-butyl-4-methoxy-5-(1-oxo-2,3-dihydro-1H-inden-5-yl)phenyl)pyrimidine-2,4(1H,3H)-dione (compound IB-L0-2.50).

N,N′-(6,6′-(5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxy-1,3-phenylene)bis(naphthalene-6,2-diyl))dimethanesulfonamide (compound IB-L0-2.76). ¹H NMR (300 MHz, DMSO-d₆) δ ppm 3.08 (s, 6H) 3.13 (s, 3H) 5.72 (d, J=8.18 Hz, 1H) 7.43 (dd, J=8.46, 1.84 Hz, 2H) 7.59 (s, 2H) 7.79 (m, 4H) 7.96 (m, 5H) 8.14 (s, 2H) 10.05 (s, 2H) 11.48 (s, 1H).

HCV Polymerase Inhibition Assay

Either two-fold serial dilutions (fractional inhibition assay) or a narrower range of dilutions spanning the IC₅₀ of the inhibitor (tight binding assay) of the inhibitors were incubated with 20 mM Tris-Cl pH 7.4, 2 mM MnCl₂, 1 mM dithiothreitol, 1 mM ethylene diamine tetraacetic acid (EDTA), 60 to 125 μM GTP and 20 to 50 nM Δ21 NS5B (HCV Strain 1B (BK, Genbank accession number M58335, or H77, Genbank accession number AF011751)) for 15 min at room temperature. The reaction was initiated by the addition of 20 μM CTP, 20 μM ATP, 1 μM ³H-UTP (10 mCi/umol), 5 nM template RNA and 0.1 U/μl RNase inhibitor (RNasin, Promega), and allowed to proceed for 2 to 4 h at room temperature. Reaction volume was 50 μl. The reaction was terminated by the addition of 1 volume of 4 mM spermine in 10 mM Tris-Cl pH 8.0, 1 mM EDTA. After incubation for at least 15 min at room temperature, the precipitated RNA was captured by filtering through a GF/B filter (Millipore) in a 96 well format. The filter plate was washed three times with 200 μl each of 2 mM spermine, 10 mM Tris-Cl pH 8.0, 1 mM EDTA, and 2 times with ethanol. After air-drying, 30 μl of Microscint 20 scintillation cocktail (Packard) was added to each well, and the retained cpm were determined by scintillation counting. IC₅₀ values were calculated by a two-variable nonlinear regression equation using an uninhibited control and a fully inhibited control sample to determine the minimum and maximum for the curve. Tight-binding assays were performed on those compounds exhibiting IC₅₀ values less than 0.005 μM in the fractional inhibition assay in order to more precisely measure the IC₅₀ values. Retained cpm were plotted vs. inhibitor concentration and fit to equation 1 using non-linear regression (ref. 1) to obtain the IC₅₀ values: Retained cpm=A[sqrt{(IC ₅₀ +I _(t) −E _(t))^2+4*IC ₅₀ *E _(t)}−(IC ₅₀ +I _(t) −E _(t))]  (eqn 1) where A=Vmax[S]/2(Km+[S]); It=total inhibitor concentration and Et=total active concentration of enzyme.

Ref. Morrison, J. F. and S. R. Stone. 1985. Approaches to the study and analysis of the inhibition of enzymes by slow- and tight-binding inhibitors. Comments Mol. Cell. Biophys. 2: 347-368.

The sequence of the template RNA used was: 5′-GGGCGAAUUG GGCCCUCUAG AUGCAUGCUC GAGCGGCCGC CAGUGUGAUG GAUAUCUGCA GAAUUCGCCC UUGGUGGCUC CAUCUUAGCC CUAGUCACGG CUAGCUGUGA AAGGUCCGUG AGCCGCUUGA CUGCAGAGAG UGCUGAUACU GGCCUCUCUG CAGAUCAAGUC-3′

When tested by the above method, the compounds of this invention inhibit HCV polymerase 1A and/or 1B. The legend in the table below is as follows: A—IC₅₀≦0.01 uM; B—0.1 uM≧IC₅₀>0.01 uM; C—1 uM≧IC₅₀>0.1 uM; and D—IC₅₀>1 uM; ND—not determined.

TABLE IC₅₀ compound 1a 1b compound 1a 1b IA-L0-2.1 C C IA-L0-2.2 B B IA-L0-2.3 C C IA-L0-2.4 B B IA-L0-2.5 C C IA-L0-2.6 C C IA-L0-2.7 C C IA-L0-2.8 B B IA-L0-2.9 A A IA-L0-2.10 D D IB-L0-2.1 C C IB-L0-2.2 C C IB-L0-2.3 A A IB-L0-2.4 A A IB-L0-2.5 B B IB-L0-2.6 B B IB-L0-2.7 B B IB-L0-2.8 B B IB-L0-2.9 A A IB-L0-2.10 A B IB-L0-2.11 A A IB-L0-2.12 A B IB-L0-2.13 A B IB-L0-2.14 A A IB-L0-2.15 A B IB-L0-2.16 A B IB-L0-2.17 A B IB-L0-2.18 A B IB-L0-2.19 A B IB-L0-2.20 A B IB-L0-2.21 B B IB-L0-2.22 B B IB-L0-2.23 B A IB-L0-2.24 B B IB-L0-2.2S B B IB-L0-2.26 B B IB-L0-2.27 B B IB-L0-2.28 B B IB-L0-2.29 B B IB-L0-2.30 B B IB-L0-2.31 B B IB-L0-2.32 B B IB-L0-2.33 B B IB-L0-2.34 B B IB-L0-2.35 B B IB-L0-2.36 B C IB-L0-2.37 C C IB-L0-2.38 C B IB-L0-2.39 C C IB-L0-2.40 C C IB-L0-2.41 C C IB-L0-2.42 C C IB-L0-2.43 C C IB-L0-2.44 C C IB-L0-2.45 C C IB-L0-2.46 C C IB-L0-2.47 D D IB-L0-2.48 D D IB-L0-2.49 D D IB-L0-2.50 B B IB-L0-2.51 A B IB-L0-2.52 A B IB-L0-2.53 A B IB-L0-2.54 A B IB-L0-2.55 A B IB-L0-2.56 A B IB-L0-2.S7 A B IB-L0-2.58 A B IB-L0-2.59 A B IB-L0-2.60 A B IB-L0-2.61 A B IB-L0-2.62 B B IB-L0-2.63 B B IB-L0-2.64 B B IB-L0-2.65 B A IB-L0-2.66 B B IB-L0-2.67 B B IB-L0-2.68 B B IB-L0-2.69 B B IB-L0-2.70 B C IB-L0-2.71 C C IB-L0-2.72 C C IB-L0-2.73 C C IB-L0-2.74 C C IB-L0-2.75 C D IB-L0-2.76 C D IB-L0-2.77 D D IB-L0-2.78 D D IB-L0-2.79 B B

HCV Polymerase Replicon Assay

Two stable subgenomic replicon cell lines were used for compound characterization in cell culture: one derived from genotype 1a-H77 and one derived from genotype 1b-Con1 (obtained from Apath, LLC, St. Louis, Mo.). All replicon constructs were bicistronic subgenomic replicons similar to those described by Bartenschlager and coworkers (Lohmann et al., Replication of Subgenomic Hepatitis C Virus RNAs in a Hepatoma Cell Line, SCIENCE 285:110-3(1999)). The genotype 1a replicon construct contains NS3-NS5B coding region derived from the H77 strain of HCV (1a-H77) (Blight et al., Efficient Replication of Hepatitis C Virus Genotype 1a RNAs in Cell Culture, J. VIROL. 77:3181-90 (2003)). The replicon also has a firefly luciferase reporter and a neomycin phosphotransferase (Neo) selectable marker. These two coding regions, separated by the FMDV 2a protease, comprise the first cistron of the bicistronic replicon construct, with the second cistron containing the NS3-NS5B coding region with addition of adaptive mutations E1202G, K1691R, K2040R and S2204I. The 1b-Con1 replicon construct is identical to the 1a-H77 replicon, except that the NS3-NS5B coding region was derived from the 1b-Con1 strain, and the adaptive mutations are E1202G, T1280I and S2204I. Replicon cell lines were maintained in Dulbecco's modified Eagles medium (DMEM) containing 10% (v/v) fetal bovine serum (FBS), 100 IU/ml penicillin, 100 mg/ml streptomycin (Invitrogen), and 200 mg/ml G418 (Invitrogen).

The inhibitory effects of compounds on HCV replication were determined by measuring activity of the luciferase reporter gene. Briefly, replicon-containing cells were seeded into 96 well plates at a density of 5000 cells per well in 100 ul DMEM containing 5% FBS. 16-24 h later, the compounds were diluted in dimethyl sulfoxide (DMSO) to generate a 200× stock in a series of eight half-log dilutions. The dilution series was then further diluted 100-fold in the medium containing 5% FBS. Medium with the inhibitor was added to the overnight cell culture plates already containing 100 ul of DMEM with 5% FBS. In assays measuring inhibitory activity in the presence of human plasma, the medium from the overnight cell culture plates was replaced with DMEM containing 40% human plasma and 5% FBS. The cells were incubated for three days in the tissue culture incubators and were then lysed for RNA extraction. For the luciferase assay, 30 ul of Passive Lysis buffer (Promega) was added to each well, and then the plates were incubated for 15 min with rocking to lyse the cells. Luciferin solution (50 to 100 ul, Promega) was added to each well, and luciferase activity was measured with a Victor II luminometer (Perkin-Elmer). The percent inhibition of HCV RNA replication was calculated for each compound concentration and the EC₅₀ value was calculated using nonlinear regression curve fitting to the 4-parameter logistic equation and GraphPad Prism 4 software.

When tested by the above method, the compounds of this invention inhibit HCV polymerase 1A and/or 1B. The legend in the table below is as follows: A—EC₅₀≦0.01 uM; B—0.1 uM≧EC₅₀>0.01 uM; C—1 uM≧EC₅₀>0.1 uM; and D—EC₅₀>1 uM; ND—not determined.

TABLE EC₅₀ compound 1a 1b compound 1a 1b IA-L0-2.1 D D IA-L0-2.2 C B IA-L0-2.3 C C IA-L0-2.4 D C IA-L0-2.5 D D IA-L0-2.6 D D IA-L0-2.7 D C IA-L0-2.8 C B IA-L0-2.9 A A IA-L0-2.10 ND ND IB-L0-2.1 D C IB-L0-2.2 D D IB-L0-2.3 A A IB-L0-2.4 ND A IB-L0-2.S B A IB-L0-2.6 C B IB-L0-2.7 C B IB-L0-2.8 ND B IB-L0-2.9 A A IB-L0-2.10 A A IB-L0-2.11 B A IB-L0-2.12 B A IB-L0-2.13 B A IB-L0-2.14 C B IB-L0-2.15 C B IB-L0-2.16 C A IB-L0-2.17 B A IB-L0-2.18 C B IB-L0-2.19 B B IB-L0-2.20 C B IB-L0-2.21 C B IB-L0-2.22 C B IB-L0-2.23 C B IB-L0-2.24 B B IB-L0-2.25 C B IB-L0-2.26 D C IB-L0-2.27 C B IB-L0-2.28 D C IB-L0-2.29 C B IB-L0-2.30 C B IB-L0-2.31 C B IB-L0-2.32 C B IB-L0-2.33 C C IB-L0-2.34 D C IB-L0-2.35 D C IB-L0-2.36 C B IB-L0-2.37 D C IB-L0-2.38 D D IB-L0-2.39 D C IB-L0-2.40 D C IB-L0-2.41 C C IB-L0-2.42 C C IB-L0-2.43 D C IB-L0-2.44 D D IB-L0-2.45 D C IB-L0-2.46 ND ND IB-L0-2.47 ND ND IB-L0-2.48 ND ND IB-L0-2.49 ND ND IB-L0-2.50 C C IB-L0-2.51 B A IB-L0-2.52 B A IB-L0-2.53 B B IB-L0-2.54 B B IB-L0-2.55 B A IB-L0-2.56 C A IB-L0-2.57 C B IB-L0-2.58 B A IB-L0-2.59 C B IB-L0-2.60 C B IB-L0-2.61 C B IB-L0-2.62 C B IB-L0-2.63 C B IB-L0-2.64 C A IB-L0-2.65 C B IB-L0-2.66 C B IB-L0-2.67 C B IB-L0-2.68 D C IB-L0-2.69 C B IB-L0-2.70 D C IB-L0-2.71 C B IB-L0-2.72 D C IB-L0-2.73 C C IB-L0-2.74 D C IB-L0-2.75 D D IB-L0-2.76 ND ND IB-L0-2.77 ND ND IB-L0-2.78 ND ND IB-L0-2.79 C C

All references (patent and non-patent) cited above are incorporated by reference into this patent application. The discussion of those references is intended merely to summarize the assertions made by their authors. No admission is made that any reference (or a portion of any reference) is relevant prior art (or prior art at all). Applicants reserve the right to challenge the accuracy and pertinence of the cited references. 

We claim:
 1. A method of treating hepatitis C virus (HCV) infection, comprising administering N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide, or a pharmaceutically acceptable salt thereof, to a HCV patient in need thereof.
 2. The method of claim 1, further comprising administering another HCV inhibitor to said patient.
 3. The method of claim 2, wherein said anther HCV inhibitor is a HCV protease inhibitor.
 4. The method of claim 1, comprising administering monosodium salt of N-(6-(3-tert-butyl-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-methoxyphenyl)naphthalen-2-yl)methanesulfonamide to said patient.
 5. The method of claim 4, further comprising administering another HCV inhibitor to said patient.
 6. The method of claim 5, wherein said anther HCV inhibitor is a HCV protease inhibitor. 